The effects of alcohol on testosterone synthesis in men: a review.
Level 5 - mechanism / opinion, no new human data
Narrative review without systematic search or quantitative pooling
PubMed 36880700 · doi:10.1080/17446651.2023.2184797
What was done
The authors reviewed the literature examining how alcohol intake affects testosterone synthesis in men across the hypothalamic-pituitary-gonadal axis and described the underlying biological mechanisms.
What was found
The abstract reports no quantitative values or effect sizes. It describes a biphasic pattern: acute consumption of low-to-moderate amounts of alcohol increases testosterone concentrations (attributed to increased liver detoxification enzyme activity), whereas high-volume or chronic excess consumption reduces serum testosterone via increased hypothalamic-pituitary-adrenal axis activity, systemic inflammation, and oxidative stress.
Why it matters
It summarizes the divergent dose-dependent pathways by which alcohol intake alters male androgen synthesis, highlighting chronic heavy drinking as a modifiable driver of low testosterone.
Limits
This is a narrative review with no systematic search criteria, meta-analytic pooling, study quality appraisal, or specific sample sizes described. Specific alcohol thresholds (e.g., grams of alcohol per day) defining low versus high consumption are not provided in the abstract.
Cited by
- supports Chronic alcohol exposure leads to decreased levels of GnRH, LH, testosterone, and progesterone, alongside increased levels of estrogen/estradiol and FSH.