50 Food & Nutrition Myths You Need to Stop Believing

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48) "Feed A Cold, Starve A Fever"

Apparently this saying originated based on the differences in temperature each illness brings on. For example, when you have a cold, eating will raise your body temperature and therefore stimulate your immune system. When you've got the flu, your body temperature is already raised, and eating was thought to potentially worsen your fever. The truth is, you should be eating in both situations. Your body's immune system is compromised no matter which illness you have, and it needs nourishment to function better, as your metabolic rate is already elevated.