Claims › Testosterone boosters
Does zinc raise testosterone?
Zinc can fix a shortfall. Topping up a full tank is a different claim.
#6 of 12 in 12 Testosterone Boosters, Ranked by What's Actually Been Tested
What the human studies found
- In a small 1996 study, 4 young men had their dietary zinc restricted for 20 weeks, and their testosterone fell sharply. 9 older men who were low in zinc took supplements, and theirs went up (no control group).
- Young men already getting enough zinc took ZMA: no significant change.
The studies (3)
The anchor source is a 2024 systematic review by a team of urologists (Morgado et al., International Journal of Impotence Research). They looked at 52 studies covering 27 proposed testosterone boosters. Their conclusion: most fail to increase total testosterone.
Watch all 12, ranked: the film on YouTube · 6:44If you're worried your testosterone is genuinely low, the test isn't a supplement: it's a blood test, and a conversation with a doctor. This is an investigation of the claims, not a guide to taking them.
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