Life without sex: Large-scale study links sexlessness to physical, cognitive, and personality traits, socioecological factors, and DNA.

Proc Natl Acad Sci U S A · 2025 · PMC12478097 · PMID 40956885

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nominally significantno p-value reported

For some other variables [ever had a committed relationship, number of sex partners (males)], nominally significant associations (i.e., uncorrected for multiple testing) were found in the expected direction.

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highly significantno p-value reported

Here, we show a small but highly significant positive phenotypic association of sexlessness with education in both men and women; we also found a negative association with household income and a positive association with the economic deprivation (Townsend index) of their neighborhood, but these are likely reflect the economic ramifications of remaining single (e.g., household income will be lower than for couples).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.