Ejaculatory frequency and male fertility: a literature review of evidence-based recommendations

Ejaculatory frequency is a modifiable behavioral factor known to influence semen quality and male fertility. While abstinence may increase semen volume and total sperm count, extended intervals can impair sperm motility and DNA integrity. The optimal abstinence duration for natural conception and assisted reproductive technologies (ARTs) remains under active investigation. This literature review evaluates the impact of ejaculatory frequency and abstinence length on key sperm parameters and fertility outcomes and aims to inform evidence-based guidance recommendations for men actively attempting conception.

A structured literature review was conducted using PubMed and Google Scholar. Studies were included if they evaluated men of reproductive age, compared varying ejaculatory frequencies or abstinence intervals, and reported semen parameters or fertility outcomes. Data were synthesized thematically across four domains: (I) semen volume and count; (II) motility and viability; (III) DNA fragmentation; and (IV) fertility outcomes including pregnancy and live birth rates.

Prolonged abstinence (≥4 to 7 days) increased semen volume and sperm count but was associated with reduced motility and higher DNA fragmentation. Shorter abstinence (≤2 days), including daily ejaculation, yielded fresher sperm with superior motility and DNA integrity, particularly among subfertile men. Clinical studies demonstrated equivalent or improved pregnancy rates with shorter abstinence intervals across natural conception, intrauterine insemination (IUI), and in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI).

Frequent ejaculation-defined as shorter abstinence intervals-is associated with improved sperm function and may enhance fertility outcomes. While individualized approaches are warranted, current evidence supports ejaculation every 1 to 2 days for men attempting conception. Future guidelines should reconsider traditional abstinence recommendations to reflect these findings.