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Spermatogenesis and seminal plasma composition

Broader age effects on spermatogenesis and seminal plasma composition, including decreases in motility, morphology, and increases in DNA fragmentation

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Jan 11, 2026
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What doses and durations of zinc, L-carnitine, and maca improve semen volume in older men?

Randomized and observational studies suggest L‑carnitine, zinc and maca can improve some semen parameters, and several trials report increased seminal volume after supplementation—however doses and du...

Jan 10, 2026

What role do hydration, ejaculation frequency, and sexual health play in semen production after 50?

Hydration, ejaculation frequency and broader sexual health each influence semen production after age 50, but in different ways: hydration affects seminal fluid volume and motility, ejaculation frequen...