~ MIXED
Supplements
Zinc for Testosterone
Restores T only if you're deficient (athletes who sweat heavily, poor diets); does nothing beyond sufficiency.
Also called: zinc · zinc for test · zinc supplement
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Verdict — mixed
Real in part — the claim outruns what it actually does.
C
Evidence grade C
Mechanistic plausibility, small studies, or observational data. Suggestive, not established.
Mechanism
Zinc is a cofactor in steroidogenesis; deficiency measurably lowers testosterone, and repletion restores baseline.
Citations
- Zinc status and serum testosterone levels of healthy adultsNutrition · 1996
The full read
The classic supplement pattern: dramatic effects in deficiency studies, nothing in sufficiency. Standard Western diets with meat rarely leave you deficient. Test before supplementing; chronic high-dose zinc also depletes copper.
