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Objective
To evaluate the association between cannabis use and testicular function (as assessed through semen quality and serum hormone levels) in different populations.
Evidence Review
Systematic review and meta‐analysis of population‐based retrospective cohort studies. PRISMA guidelines were used for abstracting data and assessing data quality and validity. Data were pooled using a fixed‐effects...
Welding may involve hazards to the male reproductive system, but previous studies of semen quality have produced inconsistent results. We studied the effects of welding on markers of semen quality in a Danish nationwide sample of 430 first-time pregnancy planners without earlier reproductive experience. Couples were recruited among members of the union of metal workers and three other trade unions...
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