Menstruation: A Nonadaptive Consequence of Uterine Evolution

  title={Menstruation: A Nonadaptive Consequence of Uterine Evolution},
  author={Colin A. Finn},
  journal={The Quarterly Review of Biology},
  pages={163 - 173}
  • C. Finn
  • Published 1 June 1998
  • Biology
  • The Quarterly Review of Biology
Although adaptive explanations for menstruation go back at least twenty-five hundred years, in the last decade two new hypotheses have been advanced. The first suggests that menstruation evolved to cleanse the uterus of pathogens introduced by sperm, and the second argues that the function of endometrial regression (with the associated menstruation in humans) is to save energy by getting rid of tissue, rather than maintaining it in the absence of an available blastocyst. Both these suggestions… 
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