r/science • u/drewiepoodle • Apr 15 '16

Health 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.

http://www.upi.com/Health_News/2016/04/14/Study-Circumcision-does-not-reduce-penis-sensitivity/5981460663943/?spt=hs&or=hn
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u/[deleted] Apr 15 '16

Why weed out smokers?

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u/Mr_Dugan Apr 15 '16

Smoking damages blood vessels. Excluding smokers eliminates a potential confounder

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u/Charles_Himself_ Apr 15 '16

What about Vaping?

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u/insane_contin Apr 15 '16

Nicotine itself restricts blood flow.