DL: What are the top environmental toxins that can interfere with hormones?

VM: In addition to BPA (mentioned above), I’m concerned about phthalates, which are used to make plastics more flexible and are found in nail polish, hair spray, and perfumes. Men exposed to more phthalates have lower sperm counts, reduced sperm quality, and significantly lower testosterone levels. Then there are polybrominated diphenyl ethers (PBDEs), persistent environmental pollutants found in furniture, mattresses, and carpets. Although their intended use is as flame-retardants, their unintended side effect is abnormal thyroid function, which can impair fertility.