Published on February 19, The data is then extracted and studies can be generated. The study group comprised of 4, adult men and women who answered questions regarding anal sex and fecal incontinence.
Graduating high school increases the rate of anal sex dramatically. Graduating from college then decreases the rate to a small degree. People who did not graduate high school had anal sex the least.
A history of major depression was strongly associated with having anal sex in both men and women. For the purposes of the study, fecal incontinence was defined as leakage of liquid or solid stool, or mucus, at least monthly. Keep in mind these figures are relative risks, meaning that the absolute increases are only 2. The authors point out that the internal anal sphincter muscle is responsible for maintaining the resting pressure of the anus i. Given the mechanism cited above, this study has several important weaknesses.
Since it was a retrospective database study, more specific information about anal sex practices was not available to the researchers. More specifically, the penile circumference girth is the important size to know, since the length seems irrelevant for the purpose of dilation. For reference, the diameter of an adult colonoscope, which is designed to be inserted into the anus, is 0. This is roughly one-third the diameter of the average erect penis.
So, after this careful analysis, here are my concluding thoughts on anal sex as a healthcare professional specializing in colon and rectal diseases: It seems like common sense, but use lots of lube. When finding a partner for anal sex, smaller is probably better. Obviously, more research is needed. Anal intercourse and fecal incontinence: Am J Gastroenterol ; A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15, men.