When a baby is growing inside a mommy's tummy, it needs food and oxygen to grow big and strong. The placenta is like a special organ that helps the baby get all that it needs. After the baby is born, mommy's body doesn't need the placenta anymore and it comes out of mommy's body.
Some people believe that eating the placenta after the baby is born can be good for mommy. They think that it can help mommy's body recover faster after giving birth and feel better.
Eating the placenta is called "placentophagy". Some people eat it raw, some people cook it, and some people make pills out of it.
However, doctors and scientists don't really know if eating the placenta is actually good for mommy. There haven't been many studies to show if it really helps mommy's body. So, some doctors think it might be better to just stick to regular food and medicine to help mommy feel better after giving birth.