Smoking too much pot doesn’t just chill men out, it can cause their sperm to become “more mellow and swimming in circles.”Just a couple of joints a week could be enough to lower sperm counts by almost a third, even when accounting for other lifestyle factors, recent research shows. “The weight of the evidence is that marijuana does affect sperm counts,” said Dr. Victor Chow, a clinical associate professor at the University of British Columbia Medical School’s department of urological sciences. While the occasional puff likely won’t cause too much harm, among “heavy users it will definitely affect the quality of the sperm,” he said. “The weight of the evidence is that marijuana probably has a negative impact not only for sperm counts but sperm function,” Dr. Chow said. That means heavy marijuana use can have an immediate effect on sperm production because the male body makes new sperm about every three months.

Source: National Post August 31, 2017 21:56 UTC