See;

Collecting stem cells
It is currently possible to collect two types of stem cells during childbirth: amniotic stem cells and umbilical cord blood stem cells. They are being studied as possible treatments of a number of conditions. Placentophagy
Some animal mothers are known to eat their afterbirth, called placentophagy. In some cultures the placenta may be consumed as a nutritional boost, but it may also be seen as a special part of birth and eaten by the newborns family ceremonially. In the developed world the placenta may be eaten believing that it reduces postpartum bleeding, increases milk supply, provides micronutrients such as iron, and improves mood and boosts energy. The CDC advises against this practice, saying it has not been shown to promote health but has been shown to possibly transmit disease organisms that were passed from the placenta into the mothers breastmilk and then infecting the baby. See also
References
External links

Spontaneous Vaginal Delivery, Video by Merck Manual Professional Edition
Maternal Morbidity/Mortality in the Media
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