How can you body reject a baby?

A body can reject a baby through a process known as fetal rejection, which occurs when the mother's immune system recognizes the fetus as a foreign entity. This can happen due to genetic incompatibility between the mother and the fetus, leading to the production of antibodies that attack the fetal cells. Conditions such as Rh incompatibility or autoimmune disorders can increase the risk of rejection. In severe cases, this can result in miscarriage or complications during pregnancy.