The Claim

Zinc plays a major role in semen quality, sperm development, and testosterone production in humans.

What the research says

Challenges is higher

Challenge is ahead, but a single strong supporting study can change this.

Supports
60score
Challenges
90score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
4 studies reviewed
In plain English

Zinc is involved in the processes that determine semen quality, sperm development, and testosterone levels in humans.

See the scientific wording

Zinc plays a major role in semen quality, sperm development, and testosterone production in humans.

What the research says

4 studies

  1. Study: Effect of Folic Acid and Zinc Supplementation in Men on Semen Quality and Live Birth Among Couples Undergoing Infertility Treatment: A Randomized Clinical Trial.

    Taking zinc and folic acid pills didn't help men have better sperm or more babies — and actually made sperm DNA more damaged. So, zinc doesn't seem to help as much as people think.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 4 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.