A man's alcohol consumption before conception affects pregnancy outcomes.

Is it true that a man's alcohol consumption before conception affects pregnancy outcomes?

Unclear. Only partial evidence addresses the claim: one large Norwegian cohort found higher odds of microcephaly at birth with higher paternal alcohol consumption before pregnancy, and an IVF study found live birth rates fell further when both partners drank four or more drinks weekly. Neither isolates a man's preconception drinking as affecting pregnancy outcomes on its own.

Verdict: PARTIAL LEAN · 4 sources for, 0 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Alcohol consumption recommendations. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Alcohol_consumption_recommendations

T, C., D, S., J, A., & A, S. (2026). The health beliefs, attitudes, and intentions of males toward pregnancy planning and preconception health and care: a systematic review.. doi.org. https://doi.org/10.1186/s12889-026-26238-2

Alcohol and fertility: how much is too much? - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1186/s40738-017-0037-x

Zuccolo, L., DeRoo, L., Wills, A., Smith, G. D., Surén, P., Roth, C., Stoltenberg, C., & Magnus, P. (2016). Pre-conception and prenatal alcohol exposure from mothers and fathers drinking and head circumference: results from the Norwegian Mother-Child Study (MoBa). doi.org. https://doi.org/10.1038/srep39535