By Leah Zerbe
Can BPA give you man boobs? According to a new report in the journal Reproductive Toxicology, early exposures to the chemical commonly found in canned foods (short for bisphenol-A) could promote abnormal breast growth in boys and adult men.
Researchers exposed male mice to very low doses of BPA, and found that the mice went on to have enlarged mammary tissue in adulthood, explains study author Dr Laura Vandenberg, a postdoctoral fellow of biology at the Center for Developmental and Regenerative Biology at Tufts University.
“This study provides additional evidence that the mammary gland is exceptionally sensitive to low doses of BPA when exposures occur during early development,” she says. “What is different about this study is that it is the first to suggest that the male mammary gland could be affected by BPA exposures.”
The study also gives additional evidence that environmental chemicals could play a role in gynecomastia, a condition that causes abnormal breast growth in boys and men, and one that may cause significant emotional distress, Vandenberg says.
BPA has already been linked to breast and prostate cancers, heart and kidney damage, behavioral problems, obesity, and type 2 diabetes. It’s a chemical that’s currently produced at a high rate, with about 6 billion tons produced throughout the world annually. The quantities are staggering, considering that a miniscule amount could cause permanent damage.
BPA is so commonly used in consumer products that it’s actually starting to invade our environment, where its effects have been noted. Now detected in air, sand, and water, the chemical acts like a synthetic estrogen; even tiny doses of it could alter your body’s ability to regulate natural bodily functions.
The wave of evidence suggesting BPA-related problems in men, women, and children isn’t expected to subside anytime soon. The number of studies reporting low-dose problems with BPA exposure in laboratory animals continues to climb, and more studies looking at the chemical’s impacts on the metabolic and immune systems, brain development, and reproduction are expected to come out by year’s end.
To protect your family from harmful BPA chemicals and replacements, avoid eating and drinking from plastic containers, and if you must use them, never heat the plastic in the dishwasher or microwave - doing so accelerates chemical leaching. Choosing fresh or frozen vegetables and other foods instead of canned will also reduce your exposure to hormone-disrupting chemicals.