What Makes Us Hungry?

By Daily Graphic
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When we need food, our body begins to crave for it. But how do we know that we are feeling 'hunger'? How does our mind receive the message and make us feel 'hungry'?

Hunger has nothing to do with an empty stomach, it begins when certain nutritive materials are missing in the blood.

When the blood vessels lack these materials, a message is sent to part of the brain called the hunger centre. This hunger centre works like a brake on the stomach and the intestines.

As long as the blood has sufficient food, the hunger centre slows down the action of the stomach and the intestine. When the food is missing from the blood, the hunger centre makes the stomach and intestine more active. That is why a hungry person often hears his stomach rumbling.

Credit : Tell Me how?