The American Academy of Pediatrics (1999) stated "a survey of adult males using self-report suggests more varied ***ual practice and less ***ual dysfunction in circumcised adult men. There are anecdotal reports that penile sensation and ***ual satisfaction are decreased for circumcised males. Masters and Johnson noted no difference in exteroceptive and light tactile discrimination on the ventral or dorsal surfaces of the glans penis between circumcised and uncircumcised men."[40] In January 2007, The American Academy of Family Physicians (AAFP) stated "The effect of circumcision on penile sensation or ***ual satisfaction is unknown. Because the epithelium of a circumcised glans becomes cornified, and because some feel nerve over-stimulation leads to desensitization, many believe that the glans of a circumcised penis is less sensitive. ...[N]o valid evidence to date, however, supports the notion that being circumcised affects ***ual sensation or satisfaction."[54]
Boyle et al. (2002) stated that "the genitally intact male has thousands of fine touch receptors and other highly erogenous nerve endings—many of which are lost to circumcision."[61] They concluded, "Evidence has also started to accumulate that male circumcision may result in lifelong physical, ***ual, and sometimes psychological harm as well."