Wednesday, December 26, 2012

Vitamin A

A is essential for a strong immune system. USDA researchers found that an increased intake of vitamin A boosted germ-killing cells by 8 percent. Because vitamin A can build up to toxic levels in the body, experts recommend getting it through beta-carotene supplements—which prompt the body to produce the A you need—or through your diet.

Conditions: Immunity
Recommendations: 5,000 international units (IU) daily, preferably as beta-caroteneNatural sources such as carrots, sweet potatoes, and mangoes
Interactions & Side Effects: Vitamin A can increase the toxicity of medications that contain Isoretinoin, such as the acne treatment Accutane

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