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Cigarette smoking is related to a decrease in semen volume in a population of fertile men.

Fábio F Pasqualotto1, Bernardo P Sobreiro, Jorge Hallak

  • 1Divisão de Clínica Urológica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil. pasquaf@hotmail.com

BJU International
|January 25, 2006
PubMed
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Cigarette smoking did not significantly impact sperm concentration, motility, or reproductive hormones in fertile men. However, heavy smokers showed a tendency towards reduced semen volume compared to non-smokers.

Area of Science:

  • Reproductive Endocrinology
  • Andrology
  • Men's Health

Background:

  • Cigarette smoking is a prevalent habit with potential adverse effects on male reproductive health.
  • Previous studies have yielded conflicting results regarding the impact of smoking on semen parameters and hormone levels.

Purpose of the Study:

  • To investigate the relationship between varying levels of cigarette smoking and semen quality indicators.
  • To assess the correlation between smoking habits and key reproductive hormone concentrations in fertile men.

Main Methods:

  • A cohort of 889 fertile men undergoing vasectomy was categorized into non-smokers, mild (<10 cigarettes/day), moderate (11-20/day), and heavy (>20/day) smokers.
  • Semen analysis included sperm concentration, motility, and motion characteristics.

Related Experiment Videos

  • Blood samples were analyzed for follicle-stimulating hormone (FSH), luteinizing hormone (LH), and serum total testosterone levels.

    • Main Results:

    • No significant differences were observed in sperm concentration, motility, or sperm motion characteristics among the smoking groups.
    • Reproductive hormone levels (FSH, LH, total testosterone) did not vary significantly based on smoking status.
    • A trend towards decreased semen volume was noted with increasing cigarette consumption.

    Conclusions:

    • Cigarette smoking does not appear to adversely affect sperm concentration, motility, or reproductive hormone profiles in fertile men.
    • A potential negative impact of smoking on semen volume was identified, warranting further investigation.