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Small doses can have big health effects. That is a main finding of a new report, three years in the making, published Wednesday by a team of 12 scientists who study hormone-altering chemicals. Dozens of substances that can mimic or block hormones are found in the environment, the food supply and consumer products, including plastics, pesticides and cosmetics. One of the biggest controversies is whether the tiny doses that most people are exposed to are harmful. The researchers concluded after examining hundreds of studies that health effects “are remarkably common” when people or animals are exposed to low doses. "Fundamental changes in chemical testing are needed to protect human health," they wrote.

As a scientist, I am often asked what “proof” links hormone-altering chemicals to diseases and birth defects. One mother questions whether exposures during her pregnancy caused her child’s autism. Another asks whether chemicals in the foods she a...

A House committee has voted down a proposal by a local lawmaker to ban the sale of baby-food products containing the chemical Bisphenol A.

Mercury in skin creams? That was the headline-grabber last week, when an FDA investigation found imported skin creams may contain toxic levels of mercury and other heavy metals. The risk is serious; people are actually getting sick from mercury contami...

A new study finds that the state of product labeling in the US is pretty poor. How poor? The study's researchers – who analyzed samples from 213 different consumer products – detected some 55 toxic chemicals. Many of these, they report, weren't lis...