13. Corn Tortillas and 14. Muffins Made With Propylparaben: This common cosmetic ingredient is also used to preserve corn tortillas and muffins. (Just check the product’s label: If it contains the chemical, it will be listed as an ingredient.) Because the chemical acts like estrogen, it can throw your system out of whack — potentially messing with your fertility and accelerating the growth of breast cancer cells, according to some research.
Unfortunately there aren’t a ton of studies done on cumulative exposure, so researchers don’t know whether your penchant for tacos and propylparaben containing lotions could compound your risk, says Leiba, who tends to dodge such foods and products (just in case).
15. Any Packaged Food With More Than Two Ingredients You Can’t ID. Like “butylated hydroxyanisole” (BHA) and “butylated hydroxytoluene” (BHT). These ingredients are antioxidants used as preservatives in foods like chips, preserved meats, and cereals. BHA is an endocrine disruptor:
High doses can affect the size of your ovaries and their ability to produce certain hormones, Leiba explains. BHT is no angel either: Animal studies link the ingredient to motor skill issues and lung and liver tumors. While ingredients can affect animals and humans differently, you might not want to be the guinea pig, Leiba says.
“It’s in your best interest to limit these chemicals as much as possible.”