Evolutionary obstetrics

  title={Evolutionary obstetrics},
  author={Karen R. Rosenberg and Wenda R. Trevathan},
  booktitle={Evolution, medicine, and public health},
Birth is a challenging and perhaps painful process for primates that have large heads relative to their body size. This includes our own species, but for humans, the pelvic changes resulting from the origin of bipedalism5–7millionyearsagorestructured the pelvis, altered the birth mechanism and further limited the size of the birth canal. Additional challenges to the birth process occurred with dramatically increased brain size starting about 2 million years ago [1]. The bipedal birth canal is… CONTINUE READING

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