My friends niece had a baby born with anencephaly, which means he was born without a brain. But has a brain stem which allows breathing and heart beat. Does any one know anything about this? How long does a baby usually sustain life until it dies from this? Im just amazed, I had no idea a human body could function without a brain and just with the brain stem alone. He will never be able to do anything of course but its so sad. Hes perfect in every other way.