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Basic Vitamin A Primer

Vitamin A Sources

Story at-a-glance -

  • Vitamin A is an important vitamin for healthy vision, immune system function, and cell growth, and it works synergistically with a number of other vitamins and minerals, including vitamins D, K2, and zinc
  • “Vitamin A” refers to several different but related nutrients that can be divided up into two main categories: retinoids (retinol) and carotenoids
  • Retinol is the bioavailable form, found only in animal foods; carotenoids are pro-vitamin A that your body must convert into the active form, and the ability to convert carotenoids to retinol is impaired in most people

By Dr. Mercola

Vitamin A is an important vitamin for healthy vision, immune system function, and cell growth. It works synergistically with a number of other vitamins and minerals, including vitamins D, K2, zinc, and magnesium, without which it cannot perform its functions.


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