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Chemicals pose risks to pregnancy

Certain compounds linked to infertility, miscarriage, defects

– From mercury to pesticides, Americans are exposed daily to environmental chemicals that could harm reproductive health, the nation’s largest groups of obstetricians and fertility specialists said Monday.

The report urges doctors to push for stricter environmental policies to better identify and reduce exposure to chemicals that prove truly risky. But it’s likely to scare pregnant women in the meantime.

That’s because during the first prenatal visit, the American College of Obstetricians and Gynecologists wants doctors to ask mothers-to-be about their exposure to different chemicals. They’re also supposed to teach women how to avoid some considered most worrisome during pregnancy.

“What we’re trying to get is the balance between awareness and alarmist,” said Dr. Jeanne Conry, president of the American College of Obstetricians and Gynecologists.

Specialists with ACOG and the American Society for Reproductive Medicine examined research about industrial chemicals and pollutants that people can absorb from the air, water, food and everyday products.

Few chemicals hit the market with good information about safe levels – something the groups hope to change. But certain chemicals are linked to infertility, miscarriages, birth defects and other problems, the committee said.

Risks are greatest for women with high on-the-job exposure. So doctors should ask about workplaces during that first prenatal visit, the committee advised.

But the report also cited research suggesting that virtually every pregnant woman is exposed to at least 43 different chemicals. It’s unclear how many matter, but some can reach the fetus.

For example, mercury pollution builds up in certain fish and, when eaten by a mother-to-be, can damage the fetus’ developing brain. Prenatal exposure to certain pesticides can increase the risk of childhood cancer, the report found.

Poor and minority populations are disproportionately exposed to various pollutants, urging doctors to be aware of concerns unique to where they live, the committee said.

For now, Conry said the consumer advice is common-sense: Choose fresh fruits and vegetables over processed foods when possible and thoroughly wash produce. Pregnant women and young children should eat certain seafood to get the nutritional benefits without the mercury risk. That means avoiding shark, swordfish, king mackerel and tilefish. Low-mercury examples are shrimp, canned light tuna, salmon and catfish.

“There’s only so much people can do as individuals and families to limit chemical exposures,” said University of Washington public health dean Dr. Howard Frumkin, an environmental health specialist. He called the statement “a very balanced, reasonable and evidence-based contribution.”

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