30 Foods That Boost Your Immune System

Red Peppers

Red Peppers

A 2013 Harvard Health Letter discovered that eating 90 milligrams of Vitamin C can cut your risk of getting a cold in half. You've eaten all the oranges and spinach you can stand, so what else can you eat? Red bell peppers! Eating this vegetable can also reduce the duration of your symptoms of colds by 8%.

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