MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The role of alcohol drinking on male fertility is still controversial. A negative association between alcohol intake and semen quality has been suggested by some authors, although other studies did not confirm this finding. We performed a cross-sectional analysis of baseline data from a cohort study on subfertile couples, and found that men with a moderate alcohol intake (4 to 7 units of ethanol per week – 1unit=12.5 grams ) had higher semen volume and sperm total count than men with both lower and higher intake.
Abstainers had a better sperm concentration, but the small size of this group prevented us from drawing any significant conclusions. Alcohol was not associated to sperm motility. Continue reading