– Why is it that humans can survive for weeks without food, but if the body goes without food for just a few hours people start to feel uncomfortably hungry?

Question

– Why is it that humans can survive for weeks without food, but if the body goes without food for just a few hours people start to feel uncomfortably hungry?

In: 11

Answer 1

Your stomach is like a muscle. You eat it expands to hold the food when its empty it will begin to shrink like letting the air out of an inflated balloon. After a time without food the stomach shrinks to where you dont feel hungry anymore. After say 24-48 hours things start to happen in your body. Your red blood cells need a constant source of energy. When they begin to starve they send out emergency signals to your liver. You liver responds by releasing “glucagon” to feed the red blood cells. But your liver only has so much emergency supply of it so it will break down the bodies fat stores as an energy source. I know this because I am diabetic, when I was diagnosed 12 yrs ago my doctor referred me to diabetes educator”