U.S. researchers report that short-term, intense exposure to cannabis vapour resulted in both male mice subjects and their sons experiencing lower sperm counts and sperm motility.
A comparison of the exposed and control groups found that the former, immediately after the exposure period, had decreased sperm motility. About a month later, the sperm counts were lower .
Several of the mice in the exposed and control groups were then bred with unexposed females.
“The male progeny of the exposed group also showed lowered sperm count and motility,” the statement notes. “Cannabis-exposed sons also showed evidence of DNA damage and disruption related to sperm cell development,” it adds.
Although plasma levels of testosterone in any age or generation of mice were not affected, dysregulated steroidogenic enzymes — which are responsible for the biosynthesis of the steroid hormones — were observed in the testis of
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