Zinc gets marketed to men as a testosterone booster and fertility fix. The truth is simpler: zinc is essential, low zinc can cause problems, but extra zinc doesn't turn a normal level into a better-than-normal one.
Written by Vita Globe Editorial Team | Reviewed against NIH guidance and peer-reviewed clinical research
What are the benefits of zinc for men?
Men need 11 mg of zinc a day[1], and zinc supports immune function, wound healing and reproductive health[1]. Low zinc has been linked to lower testosterone in small studies[2]. But in a large randomized trial of 2,370 men, zinc plus folic acid did not improve semen quality or live birth rates[3]. For men who already get enough, extra zinc is unlikely to add much.
Caveat: Most of the testosterone evidence comes from small, older studies in people who were low in zinc to begin with.
Sources: NIH ODS · Prasad 1996 · JAMA 2020 · Verified 2026-09-27
In this article
How much zinc do men need?
The RDA for adult men is 11 mg/day, compared with 8 mg for women, and the upper limit is 40 mg/day for both[1]. Beef alone contributes about 20% of the zinc Americans get from food[1], and a 3-ounce serving of oysters can provide several times the daily value[1]. Many men who eat meat or seafood regularly meet their needs without a supplement.
Men more likely to fall short include those who eat a vegetarian or vegan diet, have digestive conditions or bariatric surgery, or drink heavily; the NIH notes 30% to 50% of people with alcohol use disorder have low zinc status[1].
Does zinc raise testosterone?
This is the claim you'll see most. The research behind it is a small 1996 study that looked at zinc status and testosterone in healthy adults, including dietary zinc restriction in young men and supplementation in older men who were marginally zinc deficient[2]. It suggested that zinc status can influence testosterone levels.
The key word is status. The findings relate to men who were low in zinc or were made low in zinc. There's no good evidence that taking extra zinc raises testosterone in men whose zinc intake is already adequate. If you're concerned about low testosterone, a blood test and a conversation with your doctor will tell you far more than a supplement label.
Does zinc help male fertility?
Zinc is important for reproduction, and reproductive problems are among the signs of deficiency[1]. But the best trial we have is not encouraging for routine supplements. In a large trial published in JAMA, 2,370 men whose partners were seeking infertility treatment took 5 mg of folic acid and 30 mg of zinc, or placebo, daily for six months. Live birth rates were essentially the same (34% vs. 35%), most semen measures didn't differ, and the supplement group reported more stomach discomfort, nausea and vomiting[3].
That doesn't mean zinc never matters for fertility; a man who is truly deficient is a different story. It does mean couples shouldn't count on a zinc supplement to improve their odds.
What other zinc benefits are relevant for men?
Immune function and colds. Zinc lozenges started early in a cold appear to shorten its duration[1][4]. That evidence is specific to lozenges.
Eye health with age. The AREDS study formula, which included 80 mg of zinc with antioxidants, is used for certain people with age-related macular degeneration; AREDS2 found a version with 25 mg of zinc had a similar effect, though that finding is considered preliminary[1]. This is a doctor-directed use, not a general recommendation.
The honest summary
- Men need 11 mg/day; many get it from food.
- Low zinc may lower testosterone, but extra zinc doesn't boost normal levels.
- A large trial found zinc plus folic acid didn't improve fertility outcomes.
- Keep total intake at or under 40 mg/day unless a doctor supervises more[1].
Our option
Vita Globe Zinc Citrate Gummies with Vitamin D & Echinacea – Pouch
Each two-gummy serving provides 50 mg of zinc (as zinc citrate), plus 50 mcg (2,000 IU) of vitamin D and 4 mg of echinacea extract, in a vegan, gluten-free, mixed-berry gummy that comes in 14-count pouches. Because 50 mg is above the 40 mg/day adult upper limit, we see it as a short-term option or one to use with your healthcare provider's guidance, not an open-ended daily habit on top of other zinc.
Frequently asked questions
Should men take zinc daily?
Only if diet or health makes a shortfall likely. Men need 11 mg/day, and many get that from food[1]. See Is It Healthy to Take Zinc Every Day?
Does zinc increase sperm count?
In a large randomized trial, zinc plus folic acid didn't improve sperm concentration or live birth rates[3].
How much zinc should a man take for testosterone?
There's no evidence-based dose for boosting testosterone in men with adequate zinc. If you suspect low testosterone, get it tested.
Can too much zinc hurt men?
Yes. Long-term intake of 50 mg or more can lower copper and HDL cholesterol[1].
Sources
- Office of Dietary Supplements, National Institutes of Health. Zinc: Fact Sheet for Health Professionals. Updated January 6, 2026. ods.od.nih.gov/factsheets/Zinc-HealthProfessional/
- Prasad AS, Mantzoros CS, Beck FW, Hess J, Brewer GJ. Zinc status and serum testosterone levels of healthy adults. Nutrition. 1996;12(5):344-348. doi:10.1016/S0899-9007(96)80058-X
- Schisterman EF, Sjaarda LA, Clemons T, Carrell DT, et al. Effect of folic acid and zinc supplementation in men on semen quality and live birth among couples undergoing infertility treatment. JAMA. 2020;323(1):35-48. doi:10.1001/jama.2019.18714
- Hemilä H. Zinc lozenges and the common cold: a meta-analysis comparing zinc acetate and zinc gluconate, and the role of zinc dosage. JRSM Open. 2017;8(5):2054270417694291. doi:10.1177/2054270417694291
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing, taking medication, or caring for a child.
