Frontiers in endocrinology2023n = 1,222 (450 smokers, 772 non-smokers)
Cross SectionalHuman
This study set out to examine how cigarette smoking affects semen quality, hormone levels, metabolic health, zinc levels, and sperm DNA damage in young Russian men. It compared 450 smokers…
Nutrients2023n = 300
Cross SectionalHuman
This study looked at whether following a Mediterranean diet (MD) is linked to healthier sperm in men. Researchers surveyed 300 men (average age 35) visiting a reproductive medicine center, using…
The Science of the total environment2023n = 10
Cross SectionalHuman
This study set out to look at whether microplastics are present in human semen, a concern given animal studies suggesting they might harm reproductive health. Researchers analyzed semen samples from…