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Testosterone & Hormones

Peer-reviewed research on testosterone, hormonal regulation, age-related change, and the lifestyle factors associated with male endocrine health.

80Studies

80Human studies

2026Most recent

11Countries

Effects of cigarette smoking on semen quality, reproductive hormone levels, metabolic profile, zinc and sperm DNA fragmentation in men: results from a population-based study.

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…

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