Quantcast
Health

Consumer Product Safety Testing Overlooks Cancer Risk From Exposure to Multiple Chemicals

By Olga Naidenko

Mixtures of chemicals commonly found in consumer products are more likely to increase breast cancer risk than the same chemicals individually, according to a new analysis. But safety tests by government regulators don't routinely evaluate the combined effects of multiple chemical exposures.


For a study published in the peer-reviewed journal Toxicological Sciences, a team from the California Pacific Medical Center Research Institute looked at how the combination of three widely used chemicals can cause healthy breast cells to behave more like cancer cells.

They tested the aggregate effect of BPA, a plastics additive; methyl paraben, a preservative in cosmetics and body care products; and PFOA, a non-stick chemical formerly used to make Teflon. BPA, PFOA, and methyl paraben are all found in the bodies of Americans, due to their presence in consumer products and drinking water.

In tests for the study, when all three chemicals were present together, they changed breast cell biology in a more profound and consequential way than each chemical individually. The scientists noted that the doses of three chemicals tested were close to the levels found in people, and suggested that in the body, these mixtures could increase breast cancer risk.

Although everyone is exposed to a mixture of many chemicals every day, federal and state health agencies look at safety testing for only one chemical at a time. The effects of individual chemicals in these daily mixtures add up, but at the moment, federal agencies such as the U.S. Environmental Protection Agency (EPA) and Food and Drug Administration do not determine the safety of chemicals on the basis of the aggregate effects of chemicals people come in contact with daily.

"It's been suspected for years that chemicals behave differently in mixtures than they do by themselves," said Dr. William Goodson, a senior author of the study. "The tragedy is that no regulations require that the effects of chemical mixtures be evaluated. With the existing consumer product safety testing, we are sailing blind into a perfect storm of chemicals with almost no knowledge of what to expect."

Exposure to mixtures of toxic chemicals often starts in the womb, and the developing fetus gets its first dose of chemical exposure before birth. BPA, parabens and PFOA are also found in the placenta and the umbilical cord blood, as demonstrated by research from EWG and other research organizations.

Getting rid of the most toxic chemicals in the marketplace is essential to advance cancer prevention and to protect future generations of children. Regulatory agencies must change their testing policies to reflect the reality that Americans are exposed not to one chemical at a time, but to multiple chemicals at once.

Olga Naidenko, Ph.D. is senior science advisor for children's environmental health at Environmental Working Group.

Show Comments ()

EcoWatch Daily Newsletter

Sponsored
Business
The Overpass Light Brigade at Bascom Hall in Madison, Wisconsin on April 4, 2014. depthandtime / Flickr

Global Divestment Movement Celebrates Milestone: 1,000 Institutions With Nearly $8 Trillion in Assets Have Vowed to Ditch Fossil Fuels

By Jake Johnson

While the COP24 climate talks are at risk of ending without a concrete plan of action thanks in large part to the Trump administration's commitment to a dirty energy agenda, environmental groups on Thursday celebrated a major milestone in the global movement to take down the fossil fuel industry after the number of public and private institutions that have vowed to divest from oil, gas and coal companies surpassed 1,000.

Keep reading... Show less
Food

Slaughter-Free Lab Grown Steak Cast As Ethically Friendly Alternative

Lab-grown meat—also known as cultured meat or in vitro meat—is often cast as an environmentally and ethically friendly alternative to raising traditional livestock.

These slaughter-free products aren't available on the market yet, but the dream is so enticing that Bill Gates, Richard Branson and even Tyson Foods—one of the country's largest meat companies—have made big bets on it.

Keep reading... Show less
Energy
Northeast National Petroleum Reserve in Alaska. Bob Wick / BLM

Trump Administration's Alaska Oil and Gas Lease Sale a 'Major Flop'

Despite the Trump administration's unrelenting quest to drill the Arctic, Wednesday's oil and gas lease sale in the National Petroleum Reserve-Alaska (NPR-A) yielded a "disappointing" return of $1.5 million, E&E News reported.

Oil and gas giants ConocoPhillips, Emerald House and Nordaq Energy were the three companies that made uncontested bids on 16 tracts of land out of 254 tracts made available by the Bureau of Land Management's (BLM) annual sale in the western Arctic.

Keep reading... Show less
Climate
Dan Sedran

Environmental Changes Are Killing the Livelihood of Great Lakes Fishermen

By Corey Mintz

There's nothing in the fridge at Akiwenzie's Fish & More processing facility. The 918-square-foot building, adjacent to Natasha and Andrew Akiwenzie's house on the shores of Georgian Bay, Ontario, sits empty and dark. Out-front, gill nets lie on the ground, unused for months.

Keep reading... Show less
Sponsored
Climate
Fire in Yellowstone National Park. Mike Lewelling / NPS Climate Change Response

Poll: Most Americans Believe in Human-Made Climate Change, But a Shocking Number Still Don't

First the good news. A new Reuters/Ipsos poll out Thursday found that 57 percent of U.S. adults think climate change is caused by "human activity" or "mostly human activity"—a stance held by 97 percent or more of actively publishing climate scientists. That's up from the 47 percent in 2012.

The bad news? That implies 43 percent of U.S. adults still have doubts about the global phenomenon, similar to President Donald Trump.

Keep reading... Show less
Climate
Greta Thunberg and her father Svante at a press conference during COP24 on Dec. 4. JANEK SKARZYNSKI / AFP / Getty Images

'We Need to Act Now': 15-Year-Old Greta Thunberg Calls for Global Climate Strike

By Andrea Germanos

Greta Thunberg, the 15-year-old Swedish activist, on Wednesday called for a global climate strike. The day of action is set for Friday at "your school" or "anywhere you feel called."

Thunberg, who's made headlines for her now-weekly school strikes to urge her home country to take bold climate action, made the call from Katowice, Poland, where she's attending the COP24 climate talks, now in their second week.

Keep reading... Show less
Sponsored
Animals
Whale Shark. NOAA

Arabian Sea Sharks May be the Most Threatened in the World

By Joshua Learn

Sharks, rays and chimaeras are some of the most threatened fish in the world. More than 50 percent of species in the Arabian Sea are at elevated risk of extinction due to coastal development, overfishing, pollution and habitat destruction. According to an expansive new study, spanning more than a dozen countries, species like sawfish are particularly hard hit with extinction or local extirpation.

Keep reading... Show less
Popular

18 Cookbooks for Building a Diverse and Just Food System

By Danielle Nierenberg and Natalie Quathamer

For a delicious end to 2018, Food Tank is highlighting 18 cookbooks that embrace a diverse global food industry. The list features chefs of color and authors that identify as LGBTQ+ working to feed a food revolution that breaks the barriers of race, gender, and sexuality. These books examine everything from building Puerto Rican flavors, conquering the art of transforming leftovers into masterpieces, and grasping what merging queer culture and international cuisine looks—and tastes—like. Whether you cook seasonally, are on a budget, or eat plant-based, there's something here to inspire every reader to diversify their diet!

Keep reading... Show less
Sponsored

mail-copy

The best of EcoWatch, right in your inbox. Sign up for our email newsletter!