The researchers were surprised by the finding, which was accidental. They have a lab that tests using both male and female mice, a rarity.

I believe that females have specialized hormones which allow them to bear the pain of childbirth, but that does not necessarily translate into a higher ability to withstand pain in general.

This finding IMO is a breakthrough for women who outnumber men in sufferring from chronic pain. It could also explain why our pain frustrates our providers and causes them to come to the conclusion the pain is in our heads or that we are feigning our pain.