Dr Shanna Swan, a professor of environmental medication and public well being at Mount Sinai college of drugs in New York Metropolis, talks to Rachel Humphreys about declining fertility in males. Over the previous 40 years, common sperm counts amongst western males have greater than halved.
She tells Rachel how sure chemical substances can intrude with reproductive well being. Phthalates, used to make plastic gentle and versatile, are of specific concern. They decrease testosterone, which might have an effect on sperm rely, although they’re dangerous for girls, too, and may enhance the chance of miscarriage and untimely beginning. The reproductive disaster is critical, she says. We have to try to restrict our publicity to those chemical substances in any other case human survival may very well be threatened.