Best 10 Foods That Boost the Immune System

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Feeding your body certain foods may help keep your immune system strong. If you’re looking for ways to prevent colds, the flu, and other infections, your first step should be a visit to your local grocery store. Plan your meals to include these 10 powerful immune system boosters.

An important note

No supplement will cure or prevent disease. With the coronavirus COVID-19 pandemic, it’s especially important to understand that no supplement, diet, or other lifestyle modification other than physical distancing, also known as social distancing, and proper hygiene practices can protect you from COVID-19. Currently, no research supports the use of any supplement to protect against COVID-19 specifically.

1. Citrus fruits

wedges of grapefruit, lime, orange, and lemon on top of a turquoise table

Most people turn straight to vitamin C after they’ve caught a cold. That’s because it helps build up your immune system. Vitamin C is thought to increase the production of white blood cells, which are key to fighting infections. Almost all citrus fruits are high in vitamin C. With such a variety to choose from, it’s easy to add a squeeze of this vitamin to any meal. Because your body doesn’t produce or store it, you need daily vitamin C for continued health. The recommended daily amount for most adults is:

  • 75 mg for women
  • 90 mg for men
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