Sexual behaviour and feelings in the Netherlands. Massage of the anal sphincter before having anal intercourse is done by The national survey of sexual attitudes and lifestyles. The prevalence and severity of AD among the MSM were lower among older participants, the MSM who more frequently had sex with their partner, and participants with a higher number of sex partners.
Because AD has received little attention by health researchers in the past, more epidemiological work is required to generate solid assumptions on prevalence rates in such subgroups as the MSM population. Additionally, the skin of the anus is thin and can be injured if there is too much friction.
The health risks of anal sex appear to be severely underestimated by a big proportion of sexually active women and men in Africa, South Asia, North and Latin America [ 8 ]. When done correctly, anal sex is not "dangerous.