How Do You Know When You Are Hungry?

Hunger begins when substances like glucose (sugar), vitamins, minerals, and amino acids are missing from your blood.

Nerves in your body send a message to the hunger center in your brain telling it of the shortage. The hunger center then reacts by making the stomach and intestines more active.

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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