Functions

Some researchers believe that the foreskin facilitates intercourse. In her book Sex as Nature Intended It, Kristen O'Hara argues that foreskin is a natural gliding stimulator of the vaginal walls during intercourse, increasing a woman's overall clitoral stimulation and helping a woman achieve orgasm more often and more quickly. [2] She therefore believes that the absence of the foreskin and gliding action makes it more difficult for a woman to achieve orgasm during intercourse.
Taylor et al described the foreskin in detail, documenting a ridged band of mucosal tissue. They stated "This ridged band contains more Meissner's corpuscles than does the smooth mucosa and exhibits features of specialized sensory mucosa."[10] The AAP noted that the work of Taylor et al "suggests that there may be a concentration of specialized sensory cells in specific ridged areas of the foreskin."[11] In 1999, Cold and Taylor stated "The prepuce is primary, erogenous tissue necessary for normal sexual function."[3] Moses and Bailey (1998}, however, describe the evidence as "indirect," and state that "aside from anecdotal reports, it has not been demonstrated that this is associated with increased male sexual pleasure."[12]
Gairdner (1949) states that the foreskin protects the glans[6] but some studies show that inflammation of the glans is more common when the foreskin is present.[13]
Shen (China) found a statistically significant *(p = 0.001) increase in erectile dysfunction following circumcision.[14] Pang and Kim (South Korea) reported "Of those who were circumcised long after they had been sexually active, > 80% reported no noticeable difference in sexuality, but a man was twice as likely to have experienced diminished sexuality than improved sexuality."[15] In another study by Kim and Pang (2006) of 255 men circumcised after the age of 20 and 118 who were not circumcised, they reported that masturbatory pleasure decreased in 48% of the respondents and increased in 8%. Masturbatory difficulty increased in 63% but was easier in 37%. 20% reported that their sex life was worse after circumcision and 6% reported that it had improved (the abstract is silent about the other 74%). "There were no significant differences in sexual drive, erection, ejaculation, and ejaculation latency time between circumcised and uncircumcised men." They concluded, "There was a decrease in masturbatory pleasure and sexual enjoyment after circumcision, indicating that adult circumcision adversely affects sexual function in many men, possibly because of complications of the surgery and a loss of nerve endings." [3] [4] Sorrells et al. (2007), in a study funded by NOCIRC, compared penile sensitivity in 91 circumcised and 68 uncircumcised men and concluded, "The transitional region from the external to the internal prepuce is the most sensitive region of the uncircumcised penis and more sensitive than the most sensitive region of the circumcised penis."[5]