RoseTracker| Researchers are saying ‘let no one panic’ and lots more research is required, but in one of the first human studies, researchers have found that urinary concentrations of the controversial chemical Bisphenol A, or BPA, may be related to decreased sperm quality and sperm concentration.
BPA is most commonly used to make plastics and epoxy resins used in food and beverage cans, and people are exposed primarily through diet, although other routes are possible.
It’s considered a fact that sperm counts are decreasing but not equally by geographic location. The current study was conducted on 190 men in a fertility clinic, and a much larger sampling is required. via Science Daily
Almost 20 years ago, Carlsen and coworkers (1992) reviewed 61 heterogenous observational studies on semen quality published between 1938 and 1990. They estimated a global sperm decline of 50 percent. Some of the science has been questioned, largely because the declines were’t universal by geographic areas.