Experts Puzzled By US Male Infertility Crisis.

reports researchers suspect environmental toxins, “specifically, endocrine-disrupting chemicals found in compounds like bisphenol A (BPA) and phthalates,” can cause reduction in male sperm counts. The production of sperm is “tightly regulated by the body’s hormones, and so any interference with those hormones – say, through exposure to endocrine-disrupting chemicals – could make itself felt first through damage to sperm quantity or quality.” http://www.newsweek.com/2017/09/22/male-infertility-crisis-experts-663074.html