Risk of Fecal Incontinence Following Receptive Anal Intercourse: Survey of 21,762 Men Who Have Sex With Men
(pubmed.ncbi.nlm.nih.gov)https://pubmed.ncbi.nlm.nih.gov/34645594/ In multivariate analysis, the factors associated with FI were age (OR: 1.01), low socioeconomic status (OR 1.32 to 1.40), HIV-seropositivity (OR: 1.78), high RAI frequency (OR: 1.64), chemsex (OR: 1.67) and fist-fucking (OR: 1.61).
Thats right, fist fucking. Surprise, it makes your asshole leak.