HealthDay News 
August 2, 2013
A chemical used in everything from food-can linings to store receipts might also pose some risk for infertility and birth defects, a new study suggests.
Exposure to bisphenol A, or BPA, may disrupt the human reproductive process and play a role in about 20 percent of unexplained infertility, said researchers from Harvard University.
In laboratory experiments, they exposed 352 eggs from 121 consenting patients at a fertility clinic to varying levels of BPA.