Health claim

“Taking 400 IU of vitamin D daily for three months improves sperm motility by 15%.”

Claim extracted — not yet reviewedHigh risksupplements
This claim has been extracted from the video but has not yet been fully reviewed against published evidence. Treat with appropriate caution.

Evidence Summary

This claim has not yet been reviewed against the literature.

A precise dosage and time frame are given with a quantified outcome.

Extracted from

MALE FERTILITY: How to Improve Sperm Quality Naturally in 90 Days

Natalie Crawford, MD

Dr. Natalie Crawford outlines lifestyle and dietary changes she claims can enhance sperm quality over a 90‑day period.

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Taking 400 IU of vitamin D daily for three months improves sperm motility by 15%. — Evidence Review — MenHealth Digest