Circumcision removes the most sensitive part of a man's penis. The five most sensitive areas of the penis are on the foreskin. The transitional region from the external to the internal foreskin is the most sensitive region of the fully intact penis, and more sensitive than the most sensitive region of the circumcised penis.

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Fine-touch pressure thresholds in the adult penis.

British Journal of Urology International,

2007, Vol. 99, No. 4, 864-869

Sorrells et al. (2007)