Health claim
“Weight loss and achieving a healthy BMI can improve semen parameters such as sperm count and motility.”
Claim checked — strong evidenceMedium risknutrition
Evidence Summary
Multiple well-designed studies consistently support this claim.
Meta‑analyses of obese men demonstrate modest improvements in sperm concentration and motility after weight reduction.
Extracted from
351 ‒ Male fertility: optimizing reproductive health, treating infertility, & navigating TRTPeter Attia MD
Dr. Peter Attia discusses male fertility, covering optimization strategies, infertility treatment options, and considerations when using testosterone replacement therapy (TRT).
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