Showing posts with label cancer. Show all posts
Showing posts with label cancer. Show all posts

Tuesday, June 16, 2015

Most car pollution comes from 25% of cars

Stop-and-go traffic
increases emissions.
When it comes to polluting the environment, not all cars (or drivers) are created equal.

A recent study conducted by University of Toronto researchers found that just 25 percent of cars they measured produced about 90 percent of the total traffic-related air pollution.

Pollutants like carbon dioxide (CO2) are known to have a negative impact on climate change, but cars also emit a wide array of pollutants associated with lung cancer, respiratory diseases, and heart disease. The researchers focused on measuring these types of pollutants, and found that just a quarter of cars produced the majority of particulates and carbon monoxide in the area.

Jonathan Wang, one of the authors of the study and a chemical engineering PhD student at the University of Toronto, said the chief polluters were older cars in need of a tune-up.

“We found it was a large amount of transport trucks, but a good proportion was just cars – a mixture of both,” Wang said. “We suspect they were older vehicles.”

The researchers took real-time measurements of the exhaust of about 100,000 cars driving past air-sampling probes on one of Toronto’s busiest roads. The study was borne out of concern that vehicle fleet emissions spread farther than previously known.

In addition to total particulates and carbon monoxide, the researchers found that a quarter of cars measured produced over 76 percent of pollutants like benzene, toluene, and other known carcinogens.

Besides driving an older vehicle (anything older than seven years), Wang said driving behavior could also have a huge impact on pollution.

“Cruising at normal speeds is better than heavy braking and heavy acceleration,” he said. “Stop-and-go traffic can increase emissions for vehicles.”

The report shows that drivers have pretty good control over local car pollution, Wang said. Modifying your driving behavior, maintaining your vehicle with regular oil changes and air filter replacements, and choosing a newer car with good gas mileage could all impact air quality.

So if you want to buy a car that doesn’t ruin the world, here’s where to start:

• Buy newer
• Do your research
• Consider multiple pollutants
• Get a car record

This article has been edited for length. Source: Boston.com

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Monday, June 1, 2015

Toxic pollutants in fracking county air

New study finds fracking releases cancer-causing chemicals into the air many times higher than the EPA considers safe

The fracking process releases toxic chemicals into the air.
Emissions generated by fracking operations may be exposing people to some toxic pollutants at levels higher than the U.S. Environmental Protection Agency considers safe for long-term exposure, according to scientists from Oregon State University and the University of Cincinnati.

The researchers took air samples in Carroll County, the home of 480 permitted wells––the most in any of Ohio's 88 counties.

The team found chemicals released during oil and gas extraction that can raise people's risk of cancer and respiratory ailments.

Researchers caution they don't want to create undue alarm with their findings, but they say they hope the results will highlight the urgent need to conduct more in-depth studies of fracking emissions and the potential effects on human health.

"What we see here suggests that more needs to be known about the risks people face when exposed," said study co-leader Erin Haynes, a University of Cincinnati scientist.

Based on the data collected, researchers calculated the cancer risk posed by airborne contaminants in the Carroll County study areas.

For the worst-case scenario––exposure 24 hours a day over 25 years––they found that a person anywhere in the study area would be exposed at a risk level exceeding the threshold the EPA deems acceptable.

The lifetime cancer risk in the study area estimated for maximum residential exposure was 2.9 in 10,000, which is nearly three times the EPA's acceptable risk level of 1 in 10,000, according to the study.

Anderson cautioned that the study numbers are worst-case estimates and can't predict the risk to any individual.

The EPA did not respond to questions about the findings.

The study focused on pollutants known as polycyclic aromatic hydrocarbons (PAH). These are organic compounds containing carbon and hydrogen, found in fossil fuels.

The study mirrored other research conducted in heavily fracked areas of the country, including Texas and Pennsylvania, that have focused on volatile organic compounds. These chemicals, including benzene and toluene, also are carbon-based chemicals in the same chain as those studied in Ohio––and they present similar dangers to human health.

With fracking on the rise across the country, the study authors and other scientists say there are simply too many unknowns about the potential health effects associated with the toxic chemicals released from oil and gas operations.

'Growing Concerns and a Lot of Questions'

The study got its start when a group of citizens approached Haynes, a public health expert at the University of Cincinnati, seeking information about health risks from natural gas extraction near their homes.

None of those people said they were sickened by breathing the air, but they wanted to know more about the potential consequences, Anderson said.

"There was some concern with all of the wells that were starting to go in around their homes," Anderson said. "People want to know; wanted to get answers about how all the [fracking] activity might be affecting them."

Anderson and her associates teamed with Haynes to design a study that relied on volunteers to collect air samples in Carroll County, which is home to about 30,000 people.

After volunteers were recruited through a community meeting and word-of-mouth, air samplers were placed on the properties of 23 volunteers; they lived or worked at sites ranging from immediate proximity to a gas well to a little more than three miles away.

The aluminum box monitors contained specially treated material that absorbed contaminants. The volunteers were trained in proper handling of the samplers and documenting data.

At the conclusion of the study, the samplers were sealed in airtight bags and returned to Anderson's lab at OSU for analysis.

The samplers picked up high levels of pollution associated with fracking in the areas studied, according to the report. Levels taken within one-tenth of a mile of a well were highest; they decreased by about 30 percent in samples taken a little more than three miles from a well.

Source: Inside Climate News 
This article has been edited for length.

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Wednesday, April 22, 2015

Popular Weedkiller a carcinogen: WHO

The herbicide glyphosate is a "probable
carcinogen," cancer research agency says.
The active ingredient in Roundup, one of the world's most popular weed killers -- and the most commonly used one in the United States -- has been declared a "probable carcinogen" by the World Health Organization.

The International Agency for Research on Cancer, an arm of the WHO, recently released the results of its review of five herbicides and pesticides.

The French-based agency ranks cancer-causing agents on four levels: known carcinogens, probably or possible carcinogens, not classifiable and probably not carcinogenic.

The herbicide glyphosate, the active ingredient in Roundup, was classified by IARC as "probably carcinogenic to humans."

But the classification is not binding, said the IARC.

"It remains the responsibility of individual governments and other international organizations to recommend regulations, legislation or public health intervention," the agency said in a statement.

According to the Associated Press, the United States Environmental Protection Agency said it would consider the IARC's evaluation.

The IARC did clarify that the new ruling is mostly directed at the industrial use of the herbicide, and that use by home gardeners does not fall under the same classification.

Glyphosate is employed in more than 750 herbicide products and has been detected in the air, during spraying and in foods, reports the IARC.

The determination is sure to alarm the agro-chemical industry and particularly Monsanto, the agribusiness giant that is the leading producer of glyphosate.

Worldwide annual sales of the chemical are estimated at $6 billion.

The company put out its own statement: "All labeled uses of glyphosate are safe for human health," said Monsanto's Phil Miller, global head of regulatory and government affairs.

“We don’t know how IARC could reach a conclusion that is such a dramatic departure from the conclusion reached by all regulatory agencies around the globe,” said Miller.

Monsanto requested an urgent meeting with the World Health Organization to clarify the scientific basis of the ruling.

A summary of the agency's findings was published in the British journal Lancet Oncology.

Source: International Business Times

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Wednesday, March 11, 2015

Viral documentary is challenging China’s powerful polluters

Pollution has become China's "Inconvenient Truth".
Photo by Danilo Rizzuti/Freedigitalphotos.net
A Chinese video has garnered well over 20 million views on video sharing site YouKu, and close to 5 million on Tencent Video.

What’s more, it hasn't yet been banned.

Usually that would describe content like celebrity gossip or comical animals, but this is Under the Dome, a meticulously researched documentary on the causes and implications of the country’s pollution crisis.

Pollution in China is an inconvenient truth. Nearly everyone agrees it is a problem, but the intricacies, scale, and potential solutions are not well understood.

Chai Jing—a former TV news anchor who produced Under the Dome with her own funds—has attempted to tackle the complexities of the issue much as Al Gore did for climate change.

In her documentary, Chai purposefully guides viewers through the data on pollution, weaving in interviews with experts, policymakers, and industry representatives.

The documentary—named after the Stephen King book that inspired an American TV series—is novel on many levels. There is an expertly animated section showing how particulate matter infiltrates the lungs.

Charts and disturbing images of pollution-ravaged lungs are presented with Gore-like effectiveness.

And there are many moving anecdotes from Chai about her personal relationship with pollution, which she believes caused her infant daughter to be born with a benign tumor.

But what’s most surprising is how brazenly Chai attacks some of the most powerful organizations in the country, from the coal and oil industries to the Ministry of Environmental Protection and state-run banks.

She makes a trip to a coal factory in Hebei Province to get a firsthand account of production.

Chai goes on to discuss the quality of coal and poor regulation of its disposal.

In recent years, our coal consumption has grown, the quality of the coal has gotten worse, we aren’t cleaning the coal, and there is little regulation of coal disposal.

The result is this: In China, the places with higher coal consumption have a much higher concentration of particulate matter.

Regulators and the oil industry

Chai moves on to talk about the impact of oil consumption on air quality, focusing first on vehicle emissions standards. She addresses the fact that, while China’s increasing reliance on cars is partly to blame for poorer air quality, lax regulation of heavy-duty trucks is even more harmful.

She tracks down drivers that have stickers on their trucks claiming that they have been cleared for the “China IV” emissions standards.

Checking their engines, however, reveals that they are well below these standards. While there are regulations that can put a stop to these “counterfeit China IV” trucks, she says, they are never enforced.

Chai attempts to find out which government department is responsible for enforcing these regulations. She finds a lot of buck passing.

Moving past enforcement, Chai turns to the poor quality of oil used in commercial vehicles.

She looks to find out why standards aren’t higher, and finds a revolving door between the oil industry and the regulators meant to keep it in check.

Banks, subsidies, and zombie companies

Looking for an example of the kind of heavy industry that consumes large amounts of the coal and oil she’s been discussing, Chai zeroes in on steel.

She reveals a systemic problem faced by several industries in the country: “zombie” companies, which are noncompetitive and obsolete firms that are kept alive primarily by government subsidies.

She later makes a more general point: The most important thing for the government to do is not to subsidize obsolete, polluting industries. What it should do is provide fair opportunities for the industries of tomorrow.

What to do about it

Amazingly, given the film’s critical tone and its high-profile targets in government and major Chinese industries, the video has not (yet) been blocked, although state-run news organizations have been directed not to “hype” the documentary further, according to China Digital Times, which monitors leaked censorship instructions.

Since that directive makes clear that the authorities are aware of “Under the Dome,” it’s not clear why Chai has been able to survive the censors.

Perhaps it’s because the video is so measured in its criticism, or that it simply became too popular too fast to shut down. Or maybe the government simply agrees with her message.

According to one government report, newly appointed environment minister Chen Jining said the documentary was “worthy of respect” and thanked Chai for her work.

Even with its popularity, though, Chai is just one former TV anchor. Her lecture closes by imploring others to act.

She tells anyone who is watching to find a way to help, comparing the experience of China to those of countries that have overcome once deadly pollution problems.

This article has been edited for length. Source: Quartz

Of course, Chinese officials have begun responding and deleting the documentary from various popular sites. Read more about that here

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Friday, February 13, 2015

Asbestos to blame for Nevada cancer levels: Study

Mesothelioma has been linked to
asbestos exposure.
DENVER - Malignant mesothelioma has been found at higher than expected levels in women and in individuals younger than 55 years old in the southern Nevada counties of Clark and Nye, likewise in the same region carcinogenic mineral fibers including actinolite asbestos, erionite, winchite, magnesioriebeckite and richterite were discovered.

These data, published in the Journal of Thoracic Oncology, the official journal of the International Association for the Study of Lung Cancer, suggest that these elevated numbers of malignant mesothelioma cases are linked to environmental exposure of carcinogenic mineral fibers.

Malignant mesothelioma is a fatal cancer associated with asbestos exposure that develops on the outer linings of the lungs.

The 3-year survival rate is only 8% and there are limited therapeutic options. The incidence of malignant mesothelioma is higher in locations with known industrial and occupational exposure and for similar reasons the incidence is higher in men, with a male to female ratio of 4:1 to 8:1.

The latency period for is 30-50 years so those diagnosed from occupational exposure are usually in their seventies whereas those diagnosed younger than 55 are rarely associated with occupational exposure.

Asbestos is a commercial and regulatory term applied to six mineral fibers historically mined for industrial use. Naturally occurring asbestos is a term used to describe fibrous minerals that were not used commercially and therefore were not called asbestos and their use was and still is not regulated.

Like asbestos, these naturally occurring fibers are natural components of rocks and soils and a potential source of exposure especially if these fibers become airborne through natural erosion or human activities producing dust.

Researchers from Hawaii, Nevada, and Pennsylvania examined malignant mesothelioma mortality data from the Centers for Disease Control by gender, age group, state, and counties for the period 1999-2010.

The two southern Nevada counties of Clark and Nye were grouped together and the proportion of women and those younger than 55 years old in these two southern counties were compared to those in all other Nevada counties grouped together as well as the rest of the United States.

The male to female ratio of malignant mesothelioma in all Nevada counties excluding Clarke and Nye was 6.33:1, but in Clarke and Nye counties it was statistically lower at 2.69:1 (p=0.0468), which could not be explained by population demographics, as these were the same.

The percentage of individuals younger than 55 was significantly higher in the southern Nevada counties compared to the remainder of the US counties (11.28% vs 6.21%, p=0.0249).

Tremolite and actinolite, both members of the asbestos family, as well as erionite, winchite, richterite, and magnesioriebeckite are present in southern Nevada and all have been linked to cancer in humans.

The authors acknowledge that women and children can be exposed to fibrous minerals as a result of their husband's or father's occupational exposure when bringing these fibers home on their clothes.

However, the authors conclude "in southern Nevada there are no major asbestos industries, thus this seems an unlikely hypothesis. Instead, the presence of asbestos and other fibers in the environment of Clark and Nye Counties, where a lower M:F sex ratio and an increased proportion of malignant mesothelioma are seen in young individuals, suggests that some of these malignant mesotheliomas are caused by environmental exposure which can happen when human activities and natural processes such as wind or water release fibers in the air."

Michele Carbone, senior author on the study, states "further research is needed, including epidemiological, geological, mineralogical and health-based personal exposure studies in order to characterize the residential and occupational history of the malignant mesothelioma cases we studied, to highlight the highest risk areas within Clark and Nye counties, to identify the type of fibrous minerals and their precise distribution throughout Nevada, and to identify the activities responsible for the release of fibers in the air, which may be the cause of some of the malignant mesothelioma in this region."

Source: IASLC

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Monday, February 2, 2015

E-cigarettes produce formaldehyde: Study

Electronic cigarettes can produce more formaldehyde than regular cigarettes

Formaldehyde is a probable
human carcinogen.
A preliminary study in the New England Journal of Medicine raises a new worry about electronic cigarettes – exposure to formaldehyde.

Under certain conditions, taking 10 puffs from an e-cigarette would expose a user to about 2.5 times as much formaldehyde as he or she would get from smoking a single tobacco cigarette, according to the study.

Formaldehyde is the pungent chemical that was used to preserve the frog you dissected in your high school biology class.

It’s used as an industrial disinfectant and as an ingredient in permanent-press fabrics, plywood, glues and other household products, according to the National Cancer Institute.

It is also formed when the propylene glycol and glycerol in e-cigarette liquids and oxygen are heated together.

The World Health Organization’s International Agency for Research on Cancer says formaldehyde can cause leukemia and nasopharyngeal cancer. The U.S. Environmental Protection Agency considers the chemical a “probable human carcinogen.”

In experiments at Portland State University, researchers used a tank system type of electronic cigarette to produce nicotine vapor.

The e-liquid vapor was captured in a tube and analyzed using a technique called nuclear magnetic resonance spectroscopy. Each sample consisted of 10 puffs of vapor (at 3 to 4 seconds per puff) collected over 5 minutes.

When the e-cigarette was used on the “low voltage” setting of 3.3 volts, the researchers didn’t detect any formaldehyde in the vapor. However, when the device was on the “high voltage” setting of 5 volts, they measured an average of 380 micrograms of formaldehyde per sample.

Based on these results, the research team estimated that an e-cigarette user who vaped 3 milliliters of e-liquid per day would breathe in at least 14.4 milligrams of formaldehyde. The actual daily exposure is probably higher, they wrote, because their experiments failed to capture all of the vapor the e-cigarette produced.

For the sake of comparison, a 2005 study in the journal Regulatory Toxicology and Pharmacology estimated that a person who smoked a pack of 20 cigarettes would inhale 3 milligrams of formaldehyde in the process.

The researchers calculated that the lifetime cancer risk incurred by inhaling formaldehyde would be 5 to 15 times higher for long-term e-cigarette users than for long-term tobacco smokers.

Proponents of electronic cigarettes were quick to criticize the study for testing the devices under conditions that don’t reflect actual use.

If a person were to take 4-second puffs on a high voltage setting, they would experience a “very harsh and awful taste,” Bill Godshall, an advisor to the Consumer Advocates for Smoke-free Alternatives Assn., said in a statement distributed by the American Vaping Assn.

Gregory Conley, the group’s president, added that e-cigarette users take shorter puffs as they increase the voltage on their devices. “These are not settings that real-life vapers actually use,” he said.

But study coauthor James Pankow, a chemistry professor and expert on cigarette smoke dangers at Portland State University, said the line between e-cigarettes and tobacco cigarettes was growing fuzzier by the day.

“No one should assume e-cigarettes are safe,” he said in a statement. “For conventional cigarettes, once people become addicted, it takes numerous years of smoking to result in a high risk of lung cancer and other severe disease; it will probably take five to 10 years to start to see whether e-cigarettes are truly as safe as some people believe them to be.”

Source: Los Angeles Times

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Wednesday, January 28, 2015

Firefighters have higher risk of cancer: Study

Study confirms cancer cluster among firefighters in Victoria

Firefighters are exposed to flammable
chemicals, combustion, foams and more.
Firefighters who worked at a Country Fire Authority facility in Victoria’s Ballarat region have a higher incidence of skin, testicular and brain cancers, a comprehensive study has found.

The study, conducted by Monash University, examined cancer and death rates linked to the Fiskville site between 1971 and 1999. It found 69 cancers were among the 606 people who worked and trained there, resulting in 16 deaths.

After releasing the findings, the Victorian premier, Daniel Andrews, told reporters the research confirmed “beyond any reasonable doubt” that there was a statistically significant increase in cancers associated with firefighters who worked at the site.

“This is a very tragic report,” he said. “The evidence is becoming clearer and clearer each day that people have become sick because of this place. People have died because of this place.”

Researchers found a cancer cluster in the high-risk group, considered to be those who worked full-time on the site training firefighters, and who were exposed to flammable chemicals, combustion, foams and recycled firewater.

Of 95 high-risk workers traced, 25 had cancer and six had passed away from their cancer, the study found.

In December, Andrews announced a landmark parliamentary inquiry to examine pollution, contamination and unsafe activities at Fiskville training centre from 1970 to 1990. It is expected to conclude in June this year.

The commission would provide victims and their families with answers and support, and would consider “how, not whether” those affected and their families would be compensated. “This is sad, tragic, and we’re going to put this right,” Andrews said.

But the risk was a historical one, he said. Many of the chemicals staff came into contact with were no longer used during training.

“For those who work here now, there are very low risks associated with this site today because remediation work has been done,” Andrews said. “There’s ongoing oversight and monitoring of those risks and that vigilance is critically important.”

A spokeswoman for the Country Fire Authority (CFA) said the organisation’s chief executive, Mick Bourke, would not be speaking to the media. “He will be communicating with CFA members at some point today through a blog post,” she said.

An official with the United Firefighters Union Victorian branch, Mick Tisbury, said it was “abhorrent” Bourke had refused to comment. The union was calling for his immediate resignation, he said.

“He and the CFA have been denying there was anything wrong with the place for years, they have put our health and safety at risk.

“We’re not expendable. We have families. We are people.”

Tisbury worked at the Fiskville site for 11 years.

“Every day, we have to live with this at the back of our minds,” he said.

In June last year, there was anger among some firefighters and their families when Cancer Council Victoria released a preliminary report that stated firefighters who worked at Fiskville did not have an increased incidence of cancer.

Cancer Council CEO Todd Harper said the report was commissioned only to look at data readily available by cross-referencing the records of 599 Victorian firefighters with data from the Victorian cancer registry.

“At the time we explained the limitations of this study, including imprecision of the relative risk estimates. So, while the earlier report did not find evidence of a cluster, nor did it rule out the existence of one. The Monash University study takes into account those firefighters who had moved interstate - information which was not available earlier.”

He said the council would like to see coordinated action at a national and state level in order to reduce the burden of harm from occupational cancers.

The co-investigator of the latest study, Professor Malcolm Sim, said the research was now more comprehensive, which is why the findings differed.

“The Cancer Council report only looked at firefighters in Victoria and was only supposed to be a preliminary examination, but what we did is trace firefighters who had moved interstate and we did pick up some cancer in those people,” said Sims, who is director of the Monash centre for occupational and environmental health.

“We also placed people into different categories of exposure based on existing guidelines for doing so. This is quite a major piece of work that used Australian Institute of Health data and took over one year to complete.”

The cancer results “stood right out”, Sims said. “Their death rates from other causes of disease, like heart and respiratory disease, were quite low, because these are healthy, fit people.

“That’s why their cancer results stood right out. There was a big gap between cancer and other diseases you don’t usually see in people like this, with healthy lifestyles.”

Researchers would look in more detail at the specific compounds associated with the cancers among the group, he said.

“The problem is the firefighters studied came into contact with a cocktail of exposures and chemicals, and we don’t know which ones may be contributing to their cancers,” Sims said.

Source: The Guardian

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Wednesday, November 12, 2014

Boston area shop owners opt for carcinogen-free business

The dry-cleaning chemical perc has
been linked to cancer and health issues.
When Myra Vargas and her husband took over a dry-cleaning business in Jamaica Plain last spring, they had to make a tough decision: whether to use a common chemical called perchloroethylene, known as perc, or institute a costly change.

Vargas knew that perc, which they’d been using to clean clothes at their Roslindale shop for nearly two decades, was dangerous.

Years earlier, she’d been warned to stay away from it while pregnant. But she’d recently learned that perc probably causes cancer in dry-cleaning workers.

“We went seventeen years using something that was dangerous for everybody,” she says.

Extra encouragement to make the change to a safe system known as wet cleaning came from a group called Jamaica Plain New Economy Transition, but it wouldn’t be easy.

The couple would need to buy all new machinery and pay to get rid of their old, perc-based equipment. And making the switch would cost more than $100,000, a daunting hurdle. Plus, they’d heard conflicting stories about whether wet cleaning worked as well. But then the project helped them get a $15,000 state grant and launch a Kickstarter campaign that raised another $18,000.

On September 11, J&P Dry Cleaners celebrated its grand opening as the neighborhood’s only wet cleaner and one of only about a dozen in the state.

The shop’s opening was the first success in an ambitious effort to rid Jamaica Plain businesses of chemicals likely or suspected to cause cancer.

Across the nation, Main Street businesses routinely use such chemicals: at beauty and nail salons, hair straighteners and polishes that may release formaldehyde, for instance; at auto shops, brake cleaners that can include perc and solvents with trichloroethylene.

By persuading companies to switch to safer alternatives, the JP project aims to create locally what its leaders are calling “a cancer-free economy.”

Although nationally cancer rates are declining slightly, an estimated 1.7 million Americans will be diagnosed with the disease this year and more than half a million will die of it.

But most of us don’t need stats to tell us there’s a lot of cancer around — everyone seems to know someone.

“Not enough effort, not enough research, not enough funds have been directed toward upstream efforts to prevent carcinogens from getting into the human environment in the first place,” says Richard Clapp, an epidemiologist at the University of Massachusetts Lowell Center for Sustainable Production, which is partnering on the Jamaica Plain project.

 “How do we get to the point where we don’t pour this fire hydrant of carcinogenic chemicals into the environment?”

To be sure, exposure to chemicals doesn’t cause all (or even most) cancers. The American Cancer Society attributes 30 percent of US cancers to cigarette smoking and 35 percent to poor diet, inactivity, and obesity.

Other factors, such as genetics and infections, also contribute. But any given cancer case is now understood to have more than one cause, Clapp argues, so the idea of dishing out blame to one factor is flawed.

The JP project, which received a $20,000 grant from UMass Lowell’s Toxics Use Reduction Institute last year and was recently awarded another, is gearing up to approach other neighborhood businesses like auto shops and beauty salons.

And it’s trying to persuade local hospitals, hotels, and senior living facilities to use Vargas’s shop for dry cleaning.

In addition to reducing carcinogens, the project aims to support minority- and immigrant-owned small businesses in JP’s gentrifying economy — communities all too often left out of environmental and health discussions.

The Lowell Center for Sustainable Production is taking an even wider-angle look at creating cancer-free economies.

In partnership with two national groups, it secured foundation support — around $1 million for each of the next three years — to build a network of organizations that will strategize how best to wean the national economy off cancer-causing chemicals, then fund a series of initiatives to help do just that.

Whether the JP project or even the national one can credibly reduce our economic dependence on carcinogens remains to be seen. But we need more of this kind of bold, creative thinking.

And if we want businesses, especially small ones, to change their ways, they are going to need help.

Fortunately, Massachusetts has other like-minded initiatives, including Boston’s Green & Clean small-business certification program and the Toxics Use Reduction Institute’s statewide assistance program.

Without the JP project’s help, Vargas says she would never have given up perc.

But she’s thrilled with the decision: There’s no chemical smell in the shop, wash loads take half the time and less energy, and the whites come out whiter. Her utility bills have dropped, and there are no more fees for disposing of perc.

“At the end, it’s worth it, because now we see the results,” she says. “People like it. It’s better.”

Vargas is planning to send other neighborhood business owners to the group and is helping spread its message of a carcinogen-free Jamaica Plain.

“It’s a big problem and a hard process . . . for them to convince people,” she says. “But I’m hoping they do it.”

Source: Boston Globe

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Friday, October 31, 2014

Three schools closed due to asbestos scare

Airborne asbestos fibers are carcinogenic.
A beleaguered Huntington Beach school district has now closed three of its campuses because of an asbestos scare, leaving 1,300 students without a school to attend.

The three grade schools were closed when parents learned that their children could have been exposed to potentially carcinogenic asbestos while the Ocean View School District worked to modernize school sites.

Since then, hundreds of parents have been uncertain when and where their children would return to the classroom.

The school district is losing about $63,000 a day in state funds because students cannot attend class.

About 100 families have requested that their children be transferred to schools in other districts.

"There's no way I can trust my son is going to be safe there anymore," said parent Lily Coffin, who said she hoped to move her son to the neighboring Huntington Beach City School District.

District trustees voted during a special meeting to close Lake View, Hope View and Oak View elementary schools, while classrooms were cleaned and tested to make sure they were free of potentially carcinogenic asbestos dust. Lake View was later closed indefinitely, and now the district has decided to keep the other two schools closed indefinitely as well.

"Recently, we received information from our consultants and experts that it is not in the best interest of students and staff to reopen these three schools until we obtain additional information," said Gustavo Balderas, Ocean View's superintendent.

While the district has determined it can move students from Lake View to other campuses in the district, it’s unclear what will happen with the 1,300 students from the other campuses.

Ocean View officials have said they were aware that asbestos has been in their schools for decades. However, parents became upset when they learned the district may have been removing the material as part of a large-scale modernization project while students were present.

Ongoing testing revealed there was asbestos in two classrooms at Lake View, while a single asbestos fiber was found in a classroom at Hope View. Test results from Oak View were inconclusive, officials said.

The district said it will test for asbestos during the next several weeks at all 11 schools in the district. The cost of the tests is about $700,000, said Assistant Supt. Roni Ellis.

Construction has been suspended at every school until the summer and the district.

Cal/OSHA, is investigating whether contractors continued to remove asbestos while students were in classrooms, which would violate state law.

Ocean View officials could not yet provide an estimate of the number of families who have applied for transfers.

The loss of state funds and the cost of asbestos removal could leave the district in financial trouble. Officials said they may end up asking the state to help with costs.

Asbestos is a mineral fiber that until the 1970s was widely used in building products and insulation materials. The fibers can be released into the air during demolition work, repairs and remodeling, according to the U.S. Consumer Product Safety Commission.

When Lake View, Oak View and Hope View schools were built decades ago, asbestos was used as fireproofing on metal beams above the ceiling. Over time, the dust began to fall from the beams and settle on top of classroom ceiling tiles, district records show.

Though coming into contact with asbestos that hasn't been disturbed isn't harmful, it becomes a hazard when the dust becomes airborne, said Steven Viani, a registered civil engineer and engineering contractor with experience in asbestos and other hazardous materials.

Inhaling high levels of the dust can increase the risk of lung disease that isn't detected until years later, including a type of cancer called mesothelioma, experts say.

Teachers have expressed concern that they weren't notified about the asbestos above the tiles and said the district should have placed signs restricting access to limit the risk of the dust becoming airborne.

Source: LA Times

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Wednesday, October 29, 2014

Study to assess breast cancer risk for female firefighters

Firefighters are exposed to flame retardants,
diesel exhaust and other toxic chemicals,
which may affect their health.
When firefighters rush out the firehouse doors, sirens screeching on the way to fight fires, they put their lives on the line in more ways than one.

In responding to roughly 28,000 fire calls a year, members of the San Francisco Fire Department are routinely exposed to flame retardants, diesel exhaust and other toxic chemicals that seep out of raging infernos and work their way into the air.

A growing body of evidence strongly suggests that exposure increases firefighters’ risk of developing cancer. But until now, studies have focused on men.

That’s about to change. Members of the San Francisco Fire Department are working with researchers at UC Berkeley, UCSF and the Silent Spring Institute to find out whether exposure to toxic chemicals increases the risks of breast cancer in female firefighters.

The project, known as the Women Firefighters Biomonitoring Collaborative Study, has been under way for about a year.

“Since breast cancer is a cancer that more commonly affects women, and because of anecdotal evidence that the firefighters have been experiencing (many cases of breast cancer), we wanted to see if there was a link,” said Jessica Trowbridge, a UC Berkeley researcher who is coordinating the study.

Trowbridge and her colleagues are gathering blood and urine samples from about 160 women — 80 San Francisco firefighters and 80 city office workers who will serve as the control group — to use in measuring chemical, hormone and melatonin levels.

They will also measure the lengths of the women’s telomeres, caps on the ends of chromosomes that are associated with aging and cancer, also thought to be related to chemical exposure and working demanding night shifts.

Firefighters in general have higher rates of cancer, especially respiratory, digestive and urinary system varieties, a recent National Institute for Occupational Safety and Health study found.

That study included women, but there weren't enough of them to draw robust conclusions about their cancer risks, according to the Centers for Disease Control and Prevention.

With about 225 female firefighters, San Francisco is better equipped than most cities for a study like this: Women make up about 13 percent of its firefighting population, said Heather Buren, a lieutenant and paramedic with the fire department who is working on the study.

In 2011, less than 5 percent of firefighters nationwide were women, according to the Bureau of Labor Statistics.

Researchers will also test for other chemicals that could contribute to higher rates of cancer in both groups of women, who are probably exposed to personal care and household products as well.

There has been a cultural shift with respect to chemical exposure. For one, firefighters now have better breathing masks, which they’re encouraged to wear for longer periods of time in toxic environments.

There are also rules prohibiting members of the department from storing their turnouts — the suits they wear to fight fires — in firehouse rooms where they eat and sleep.

The San Francisco Firefighters Cancer Prevention Foundation, which organizes screenings and promotes cancer prevention in the department, is partially responsible for those changes. It was formed in 2006 by Tony Stefani, a retired firefighter who himself fought cancer.

Researchers have nearly finished enrolling participants for the breast cancer study. They hope to have results published in two years. The women who participate in the study will be able to see their individual results when they are complete.

Source: San Francisco Gate. This article has been edited for length.

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Friday, October 24, 2014

List of cancer-causing chemicals grows

Many chemicals have been linked to
cancer, researchers say.
Four new substances have been added to a list of chemicals that may cause cancer compiled by the U.S. Department of Healthand Human Services (HHS).

The list of known carcinogens now includes a chemical called ortho-toluidine, which is used to make rubber chemicals, pesticides and dyes.

Recent research has linked the substance to bladder cancer in people.

Three other substances were added to a list of agents that are "reasonably anticipated to be human carcinogens."

These include a cleaning solvent called 1-bromopropane, a wood preservative mixture known as pentachlorophenol and cumene, which can be found in fuel products and even tobacco smoke.

"Identifying substances in our environment that can make people vulnerable to cancer will help in prevention efforts," Linda Birnbaum, director of the National Institute of Environmental Health Sciences and the National Toxicology Program, said in a statement.

"This report provides a valuable resource for health regulatory and research agencies, and it empowers the public with information people can use to reduce exposure to cancer-causing substances."

Ortho-toluidine was originally classed as "reasonably anticipated" to be a human carcinogen in 1983. But HHS scientists re-evaluated the substance, looking at three studies of dye workers and two studies of rubber-chemical workers who were regularly exposed to ortho-toluidine.

They found enough evidence of a link between ortho-toluidine exposure and an increased risk of bladder cancer to call the chemical a known carcinogen, according to HHS. Rats also developed bladder tumors after they ingested ortho-toluidine.

Ortho-toluidine is no longer produced in the United States, but at least 1 million lbs. (450,000 kilograms) of the substance is imported into the country each year, according to HHS.

The people who have the greatest risk of exposure are employees who work in chemical plants where ortho-toluidine is used to make rubber chemicals, dyes and pesticides.

HHS officials said they didn't have enough evidence to definitively prove that exposure to the other three chemicals can cause human cancers. But these substances do cause rats and mice to develop tumors, according to the agency.

In experiments, rodents that inhaled fumes of 1-bromopropane — a colorless to light yellow liquid solvent — developed tumors in several organs, including their skin, lungs and large intestine.

The substance is used as a cleaner for optics, electronics and metals. It has also become popular in dry cleaning as a replacement for perchloroethylene, another chemical considered a health and environmental hazard.

Mice that inhaled cumene fumes developed lung tumors and liver tumors, according to HHS's review. The flammable liquid with a gasoline-like odor is found in coal tar and petroleum, as well as tobacco smoke. It is used primarily to make acetone and phenol.

Pentachlorophenol — a substance used to treat utility poles, wood pilings and fence posts — caused tumors in the liver and other organs of mice.

In small studies of humans, exposure to this compound was associated with an increased risk of the blood cancer non-Hodgkin lymphoma, but the HHS said it considered the evidence too limited to call pentachlorophenol a known carcinogen.

The HHS's 13th Report on Carcinogens, which now includes 243 listings total, is available online: http://ntp.niehs.nih.gov/pubhealth/roc/roc13/index.html

Source: LiveScience

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Thursday, October 9, 2014

Dangerous chemical in Southern California air

Polluted outdoor air can become a problem indoors.
Regional air-quality officials are trying to find the source of a cancer-causing chemical discovered recently in Jurupa Valley at levels about four times higher than the average for urban Southern California.

“There is no cause for alarm, but we are looking into it because it is a bit unusual,” said Philip Fine, an assistant deputy executive officer for the South Coast Air Quality Management District.

The chemical is methylene chloride, a common industrial solvent used as a degreaser and paint stripper. It is very volatile, so it’s also used as an aerosol spray propellant and as a blowing agent for polyurethane foams.

Jean Ospital, the air district’s heath-effects officer, said the levels found in Jurupa Valley are too low to have short-term health effects.

But the long-term effect is a concern, Ospital said. The cancer risk is estimated at 7 cases per 1 million people over a 70-year lifetime, and the air district wants to eliminate that risk, he said.

“This risk is high for just one chemical, and it’s higher than the other communities in the air basin,” Ospital said.

In Jurupa Valley, the total cancer risk for all other sources of air pollution, including diesel soot, is 385 cases per 1 million people.

Fine said the air district first noted methylene chloride spikes in outdoor air samples taken at the district’s air monitoring station in the Rubidoux area of Jurupa Valley in late 2012 when collecting data for an air toxics study.

He said the district also found elevated levels in recent samples, as well as in samples collected separately by the state Air Resources Board, which monitors air quality for California’s Environmental Protection Agency.

The source, however, remains a mystery.

METHYLENE CHLORIDE
What: A volatile industrial chemical with a chloroform-like odor.
Uses: Paint stripping, paint remover, metal cleaning, degreasing, resin production, solvent distribution.
Industries: Pharmaceutical, adhesive and film base manufacturing.
Health effects: Cancer potential with long-term exposure. Short-term exposure to high concentrations may cause mental confusion, light-headedness, nausea, vomiting and headaches.
 
Air district officials have examined wind directions and other meteorological data, but they have been unable to trace the pollution to a residence or business, Fine said.

In 2004 and 2005, air quality officials found similar spikes in methylene chloride in Long Beach, and never were able to find the source.

Fine said the chemical is found in paint-stripping products readily available at retail stores such as Home Depot and Lowe’s. The air district, he said, may re-evaluate how it regulates such products, he said. It already has rules limiting the volatility of paints and varnishes because fumes contribute to the formation of smog.

While regional air quality is improving, Jurupa Valley has pockets of people living near freeways, railroads and warehouses who are exposed to higher levels of pollution.

Penny Newman, executive director of Jurupa Valley-based Center for Community Action and Environmental Justice, said several industries in the area may be using industrial solvents.

“It is disturbing that they don’t know where it is coming from,” Newman said.

Methylene chloride isn’t the first unusual type of pollution in Jurupa Valley.

In 2008, the air district disclosed that it had found elevated levels of cancer-causing hexavalent chromium in the Rubidoux area.

District officials later traced the pollution to the TXI Riverside Cement plant, which was found to be releasing chromium-tainted cement dust into the community.

TXI was cited for dust violations and agreed to pay $1 million in penalties and to make changes to its operations in ways that greatly reduced dust emissions.

Source: The Press Enterprise

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Friday, October 3, 2014

Warehouse workers tested for PCB exposure

The warehouse has been closed and
workers sent home until further notice.
A Walmart returns processing center in Indianapolis is contaminated with a toxic substance, and hundreds of workers at the evacuated facility are now undergoing medical testing to see if they were exposed.

The contamination involves a massive warehouse, where logistics company Exel processes merchandise returned from Walmart retail stores.

The warehouse now sits empty after Exel ordered nearly 600 full-time and contract workers to evacuate the processing center on August 20.

On that day, supervisors met with employees at 3:45pm to announce the facility was shutting down immediately.

During the meeting, employees were not told the reason for the shut-down, only that they would continue to receive their normal pay and benefits and would not return to work until further notice, according to a longtime worker who asked not to be identified.

Five days later, Exel managers again met with employees at a nearby hotel to explain Walmart discovered the presence of a strange substance within the facility.

Testing showed the substance to be PCBs or polychlorinated biphenyl, a synthetic organic chemical compound that is highly toxic and classified by the US Environmental Protection Agency as "probable human carcinogens." The EPA says studies in animals provide conclusive evidence that PCBs cause cancer.

Over the past two weeks, Exel employees have been reporting to an east-side medical laboratory for blood tests, which Exel hopes will shed light on which employees were exposed to the PCBs and what impact - if any - the exposure might have on their health.

"It's a situation that continues to evolve, and we're working diligently with Walmart to understand it more," said Exel Vice President of Communications Lynn Anderson.

"We took an overly cautious role and decided we wanted to get out of the building right away. We are really trying to understand the extent of the contamination and the exposure and what it means for the future and the facility."

A Walmart company spokesperson says that Walmart made a joint decision with Exel to close operations "out of an abundance of caution."

"Walmart immediately hired an environmental consulting firm after a contractor servicing a return center we lease discovered the presence of PCBs, or polychlorinated biphenyls. Additional testing confirmed PCBs were present in the building, which is operated by a contractor, Exel Inc. We made a joint decision with Exel to close the facility out of an abundance of caution.

"Both the U.S. Environmental Protection Agency and the Indiana Department of Environmental Management (IDEM) have been informed and are investigating this matter. We are cooperating with the investigation, and early indications suggest that the contaminant is in the building materials.

"We have made arrangements for returned products from our stores to be sent to other return centers."

Unusual particles discovered

Anderson says the contamination was discovered by accident, while equipment was being moved inside the plant. That's when workers found an unusual residue and "particles that didn't look right."

Walmart hired a third-party company to test the residue, and according to Exel, the testing revealed the presence of PCBs.

How much PCBs and where did they come from? Exel and its employees are still looking for answers.

Exel plans to begin its own independent testing at the abandoned warehouse this week. In the meantime, it is actively looking for another facility to resume its operations. Exel has not ruled out the possibility of returning to the contaminated facility, but says that is unlikely - at least in the short-term.

Since the evacuation, Exel has hosted two face-to-face meetings with affected employees to provide them with information, and another meeting is scheduled for early October.

At the last meeting, workers were encouraged to take advantage of free blood tests.

PCBs are considered very dangerous to human health, and they are very hard to destroy. Banned in the United States for decades, they were commonly used as coolants and stabilizers in products such as fluorescent light ballasts, transformers, paints, cements, electrical components, pesticides, lubricating oils and sealants.

A known carcinogen, PCBs are linked to other serious health concerns including negative impacts on the immune, reproductive and neurological systems.

Source: 1340 AM WBIW

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Thursday, October 2, 2014

Restoration workers exposed to asbestos

Exposure occurred during restoration of Chicago fire station

Restoration and construction workers
have a higher risk of asbestos exposure,
which is linked to lung disease and cancer.
Workers renovating a historical 1887 firehouse in Chicago were exposed to asbestos and electrical hazards, according to an investigation by the U.S. Department of Labor's Occupational Safety and Health Administration.

The inspection found Structure Development Midwest LLC failed to collect and dispose of asbestos-containing material in sealed, labeled and waterproof bags.

The Chicago real estate and management company was issued one willful and seven serious citations carrying proposed penalties of $46,000 for the violations.

"Exposure to asbestos can cause loss of lung function and cancer, among other serious health effects, and workers must be trained in procedures that minimize exposure. Workers should never be put at risk because a company failed to protect them from a known, dangerous substance," said Kathy Webb, OSHA's area director in Calumet City.

The March 25, 2014, inspection found that the company failed to act and comply with existing regulations when employees were exposed to asbestos; did not ascertain whether asbestos work conducted was in compliance with standards; and failed to visibly identify and limit access to areas containing asbestos material.

A willful violation is one committed with intentional, knowing or voluntary disregard for the law's requirement, or with plain indifference to employee safety and health.

Serious electrical safety violations found at the site included lack of ground fault circuit interrupters, open electrical panels and failure to protect temporary wiring. These violations resulted in the issuance of seven serious citations.

An OSHA violation is serious if death or serious physical harm could result from a hazard an employer knew or should have known exists.

Structure Development Midwest has 15 business days from receipt of its citations and penalties to comply, request an informal conference with OSHA's area director, or contest the findings before the independent Occupational Safety and Health Review Commission.

To ask questions, obtain compliance assistance, file a complaint or report workplace hospitalizations, fatalities or situations posing imminent danger to workers, the public should call OSHA's toll-free hotline at 800-321-OSHA (6742).

Under the Occupational Safety and Health Act of 1970, employers are responsible for providing safe and healthful workplaces for their employees.

OSHA's role is to ensure these conditions for America's working men and women by setting and enforcing standards, and providing training, education and assistance. For more information, visit OSHA's website.

Source: OSHA

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Friday, September 12, 2014

Coal ash to blame for cancers in PA prison: Report

A high rate of cancer among inmates at a southwestern Pennsylvania prison is linked to a nearby coal ash dump, and the correctional facility should be closed down, according to a recent report.
Black dust was seen settling on prison
grounds, experts say.

Eleven prisoners died of cancer from 2010 through 2013, and six others have been diagnosed with cancer at the State Correctional Institution Fayette, said the report, released by the Abolitionist Law Center, a public interest law firm based in Pittsburgh, and the Human Rights Coalition, a national prison reform group.

SCI Fayette has a higher inmate death rate than all but two other prisons in the state, both of which have high geriatric populations, it said.

A 12-month investigation found that blowing coal ash was the most likely cause of the inmate cancers as well as other illnesses at the facility.

Inmates quoted in the report described black dust blowing from the dump and settling onto the prison and its grounds.

The report calls for SCI Fayette, which houses 1,986 inmates and has 677 staff, to be shut down. The medium security facility was built for $119 million and opened in 2003. All of the state’s license plates are made there.

Coal ash, also known as fly ash, is the residue of burning coal in a power plant. It was used extensively in Pennsylvania in the 1960s and 1970s in mine reclamation projects, notably in the effort to control a mine fire under the town of Centralia.

Its carcinogenic components, including lead, arsenic and mercury, were revealed in a 2010 report by a public interest group, Physicians for Social Responsibility.

“There is a strong correlation between confinement at SCI Fayette and the onset of serious health symptoms,” said Bret Grote, an author of the prison report. “There needs to be an independent and comprehensive study of the health of people at the prison and in the surrounding community.”

Officials at the state Department of Corrections are reviewing the report, a spokeswoman said.

“We take the health of our inmates and staff seriously,” said the spokeswoman, Susan McNaughton.

David LaTorre, a spokesman for the Pennsylvania State Correctional Officers Association, said it too would review the report carefully.

“We are aware of some officers from SCI Fayette who are suffering from illness,” he said.

Fly ash from two regional power plants was dumped at the Fayette County site for 60 years, said John Poister, a spokesman for the state Department of Environmental Protection.

No one answered the telephone at Matt Canestrale Construction Inc in Elizabeth, which owns the dump site.

Source: Reuters

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Monday, September 8, 2014

Gas workers may be exposed to dangerous levels of benzene: Study

Gas well workers exposed to benzene
have a higher risk for blood
cancers like leukemia, researchers say.
A new study this month reveals unconventional oil and natural gas workers could be exposed to dangerous levels of benzene, putting them at a higher risk for blood cancers like leukemia.

Benzene is a known carcinogen that is present in fracking flowback water. It’s also found in gasoline, cigarette smoke and in chemical manufacturing.

As a known carcinogen, benzene exposures in the workplace are limited by federal regulations under OSHA. But some oil and gas production activities are exempt from those standards.

The National Institute of Occupational Health and Safety (NIOSH) worked with industry to measure chemical exposures of workers who monitor flowback fluid at well sites in Colorado and Wyoming.

A summary of the peer-reviewed article was published online this month on a CDC website. In several cases benzene exposures were found to be above safe levels.

The study is unusual in that it did not simply rely on air samples. The researchers also took urine samples from workers, linking the exposure to absorption of the toxin in their bodies. One of the limits of the study includes the small sample size, only six sites in two states.

Dr. Bernard Goldstein from the University of Pittsburgh School of Public Health says the study is the first of its kind. Goldstein did not contribute to the study’s research, but he has conducted his own research on benzene. And he’s treated patients exposed to the carcinogen.

“These workers are at higher risk for leukemia,” said Goldstein. “The longer, the more frequently they do this, the more likely they are to get leukemia particularly if the levels are high.”

The study looked at workers who use a gauge to measure the amount of flowback water that returns after a frack job is initiated. A spokeswoman for NIOSH says none of their studies draw any conclusions about exposures to nearby residents, but focus specifically on workers.

But Dr. Goldstein says it shows that there could be potential risks to residents as well.

“We’re not acting in a way to protect the public who are at high risk,” said Goldstein. “And we can’t even tell you who is at high risk. Yet we’re rushing ahead in a situation where all of the data are telling us that there are risks.”

Authors of the NIOSH benzene study said that more research with larger sample sizes should be done, especially since there was so much variation in the levels observed at different times and well sites.

The researchers also listed a number of recommendations for industry to take to reduce benzene levels on the job site. These include changing tank gauging procedures, training workers, limiting exposure times, carrying gas monitors, using respiratory and hand protection, and monitoring exposure levels.

Source: StateImpact

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Thursday, August 21, 2014

Formaldehyde threat real: Chemical industry

Formaldehyde is often used in wood products and has
been linked to cancer and other health concerns.
For years, the chemical industry has been winning a political battle to keep formaldehyde from being declared a known carcinogen.

The industry’s chief lobby group, the American Chemistry Council, has persuaded members of Congress that the findings of both the Environmental Protection Agency and the Department of Health and Human Services were wrong and should be reviewed by the National Academy of Sciences.

In 2011, the academy did indeed criticize the EPA’s report on formaldehyde for being unclear. The chemical industry then used that critique to delay dozens of other ongoing evaluations of potentially toxic chemicals.

But recently, the academy issued a second report, which found in effect that government scientists were right all along when they concluded that formaldehyde can cause three rare forms of cancer.

“We are perplexed as to why today’s report differs so greatly from the 2011” report, Cal Dooley, president and chief executive officer of the American Chemistry Council, said in a statement titled “The Safety of Formaldehyde is Well-Studied and Supported by Robust Science.”

Part of the disparity is that in the 2011 report, Congress asked the academy only to critique the EPA’s draft assessment rather than evaluate the dangers of formaldehyde itself. The panel concluded that the EPA’s report was too long, repetitive and lacked explanation.

But after reviewing the scientific evidence itself, the academy concluded that formaldehyde is indeed a known carcinogen.

Formaldehyde is widely used in wood products and clothing.

In a blog posting, Jennifer Sass, a scientist at the Natural Resources Defense Council, called the American Chemistry Council’s efforts “a vicious attack on government scientific assessments [meant] to distort and discredit any evidence linking toxic chemicals to diseases, disabilities or death.”

Using the academy to review any negative findings from the EPA has become common tactic of the chemical industry.

The Center for Public Integrity reported in June that Rep. Mike Simpson, a Republican from Idaho, got the EPA to turn its negative assessment of arsenic over to the academy. At the same time, Congress also insisted that the EPA redo all ongoing assessments to address the criticisms of the 2011 formaldehyde review. Forty-seven assessments are affected.

The American Chemistry Council said in its statement that the academy “misses an opportunity to advance the science.”

Richard Denison, a scientist at the Environmental Defense Fund, countered: “One can only hope that this sorry episode and waste of public resources will help to expose the narrow self-interest of the industry, which for years it has deceptively sought to wrap in the mantle of sound science.”

Source: Center for Public Integrity

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Friday, August 8, 2014

Fathers' solvent exposure linked to cancer in children

Parents' exposure to chemicals such as benzene, toluene and
TCE could be linked to brain tumors in their children.
Brain tumors in children could have as much to do with the father's occupational exposure to solvents as they have to do with the mother's, a new Australian study has found.

The study, published in the British Journal of Cancer, has found a link between parents' exposure to chemicals such as benzene, toluene, and trichloroethylene and brain tumors in their children.

Lead author Dr Susan Peters, occupational epidemiologist at the University of Western Australia, says while brain tumors are relatively rare they are a major cause of cancer death among children, and the causes are largely unknown.

"Because most of the cases occur before age five, the question is what are the risk factors because there are some genetic syndromes that are known to cause brain tumors but only in less than five per cent of cases," says Peters.

"The children are pretty young, [so] it could be that some of the parental exposures before or during pregnancy may be a cause."

The new study surveyed nearly 306 cases of parents of children up to 14 years old with brain tumors, which were diagnosed between 2005 - 2010 in Australia.

The researchers compared the parents' occupational exposures to solvents with those of 950 parents whose children did not have brain tumors.

The findings suggest that fathers working in jobs where they are regularly exposed to benzene in the year before their child is conceived are more than twice as likely to have that child develop a brain tumor.

Women working in occupations that expose them to a class of compounds called chlorinated solvents -- found in degreasers, cleaning solutions, paint thinners, pesticides and resins -- at any time in their lives also have a much higher risk of their child developing a brain tumor.

Building on previous studies

While brain tumors in children are relatively rare, previous studies have suggested a link between parental occupation and childhood brain tumors, finding parents working in industries such as the chemical and petroleum industries, car-related jobs, and jobs with regular exposure to paint, have a higher risk of their children developing brain tumors.

Peters says a previous study in rats also found that toluene -- found in petrol, paints, and inks -- had an effect on sperm cells, which points to a possible explanation for the link in humans.

Commenting on the study, Emeritus Professor Michael R. Moore, vice president of the Australasian College of Toxicology and Risk Assessment, says the data shows paternal exposure was a key issue.

"This is the children being directly affected by the father and the father's exposure is taking place prior to the children being conceived," says Moore.

"Parents who are thinking of having children should be thinking about not just what's happening with the mums but also with the dads."

Peters stressed that the study only involved relatively small numbers of cases, and it was still too early to say whether solvent exposure was the cause of childhood brain tumors.

However she said these solvents were associated with a range of other effects so exposure should be kept as low as possible anyway.

Source: ABC
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