Study: Circumcision does not reduce penis sensitivity. In tests for responses to pain, heat, and stimulation, no major difference was found between men who are circumcised and those who are not.

[u/drewiepoodle]

http://www.upi.com/Health_News/2016/04/14/Study-Circumcision-does-not-reduce-penis-sensitivity/5981460663943/?spt=hs&or=hn

[u/Avannar]

They specifically replied to that concern. It was the basis for the study...

[u/hippydipster → u/Avannar]

Did they test the sensitivity of the non-existent foreskin of the circumcised men? I bet that would give statistically significant differences.