Circumcision does not adversely affect ejaculatory functions in adults; they may slightly improve.

Can not being circumcised cause premature ejaculation?

The prepuce is a specific erogenous zone that contains a rich and complex network of nerves. Circumcision radically desensitizes the penis, but incomplete circumcision may cause premature ejaculation.

Will I last longer if I get circumcised?

Circumcised men take longer to reach ejaculation, which can be viewed as "an advantage, rather than a complication," writes lead researcher Temucin Senkul, a urologist with GATA Haydarpasa Training Hospital in Istanbul, Turkey.