logically - head
It would cause the body liver damage, brain damage, or most likely death. It depends on how much the body intakes, and of what.
Each year, workers suffer approximately 125,000 caught or crushed by injuries that occur when body parts get caught between two objects or entangled with machinery. These hazards are also referred to as "pinch points." The physical forces applied to a body part caught in a pinch point can vary and cause injuries ranging from bruises, cuts, and scalping to mangled and amputated body parts, and even death.
yes yes
Death.
Acidosis
Colin Creevey died in the Battle of Hogwarts. Harry saw Oliver Wood carry his body into the Great Hall. The specific cause of death is unknown, but it is likely he was killed by a Death Eater.
18 hours
prosthesis
prosthesis
No amputated body part is too small to be salvaged. Debris or other contaminating material should be removed, but the tissue should not be allowed to get wet. An amputated body part should be wrapped in bandages, towels.
I have read it was legs. There were piles of legs.
You can starve to death, most likely, you'll die