A member asked:

Does unprotected anal sex cause penis get smaller in width after it was big? or pressure of anus muscles on penis cause that ?

A doctor has provided 1 answer
Dr. Robert Killian answered

Specializes in General Practice

Anal sex: Nope. Not in any way. The rectal muscles may be tight but they cannot change the penile anatomy.

Answered 6/23/2013

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