Zinc
Written by Fertility Decoded. Reviewed by D R, MS (OBG), FRM. Review date: 31 August 2026.
The verdict
May modestly improve some sperm-quality markers; not shown to raise pregnancy or live-birth rates.
A trace mineral essential to sperm formation; sold standalone and in most male-fertility combo products.
What the evidence shows
Systematic reviews: supplementation significantly improves sperm morphology, motility, and semen volume; no significant effect on concentration, count, or viability.
Evidence tier
Non-Cochrane evidence🟡 Smaller systematic reviews/meta-analyses or RCTs exist, no Cochrane-grade synthesis. Emerging, not proven.
Frequently asked questions
- Reviews show modest gains in sperm morphology, motility and semen volume, but no effect on count or concentration and no proven rise in pregnancy rates.
Does zinc improve sperm?
Sources
Take this further
Sources last reviewed .