The Claim
Supplementation with 5 mg of folic acid and 30 mg of elemental zinc for six months increases sperm DNA fragmentation by 2.4 percentage points compared to placebo in men undergoing infertility treatment.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Taking 5 mg of folic acid and 30 mg of zinc daily for six months increases sperm DNA fragmentation by 2.4 percentage points in men being treated for infertility, compared to those taking a placebo.
See the scientific wording
Supplementation with 5 mg of folic acid and 30 mg of elemental zinc for six months significantly increases sperm DNA fragmentation by 2.4 percentage points compared to placebo in men undergoing infertility treatment, suggesting a potential adverse effect on sperm genomic integrity.
High doses of folic acid overload the body's ability to process it properly, leading to unmetabolized folic acid that blocks natural folate use. This stops the cell from fixing broken DNA in sperm. At the same time, too much zinc interferes with enzymes that protect DNA, making the damage worse and harder to repair.
What the research says
1 studyTaking these supplements made the DNA in men's sperm slightly more damaged compared to taking a placebo, which is exactly what the claim said.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.