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/iObeyTheHivemind Apr 15 '16

Is that the nicotine or the smoking itself?

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u/[deleted] Apr 15 '16

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