Health Encyclopedia

 
  • Vitamin B12 source

    Vitamin B12 source

    The human body stores several years' worth of vitamin B12, so nutritional deficiency of this vitamin is extremely rare. Although, people who follow a strict vegetarian diet and do not consume eggs or dairy products may require vitamin B12 supplements.

    Vitamin B12 source

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  • Vitamin B3 deficit

    Vitamin B3 deficit

    Pellagra is a disease of deficiency of niacin (vitamin B3) which causes problems in the skin and the digestive and nervous systems.

    Vitamin B3 deficit

    illustration

  • Vitamin D deficit

    Vitamin D deficit

    Because vitamin D is essential for the body's utilization of calcium, a deficiency may result in severe loss of calcium and consequently a softening and weakening of bones.

    Vitamin D deficit

    illustration

    • Vitamin B12 source

      Vitamin B12 source

      The human body stores several years' worth of vitamin B12, so nutritional deficiency of this vitamin is extremely rare. Although, people who follow a strict vegetarian diet and do not consume eggs or dairy products may require vitamin B12 supplements.

      Vitamin B12 source

      illustration

    • Vitamin B3 deficit

      Vitamin B3 deficit

      Pellagra is a disease of deficiency of niacin (vitamin B3) which causes problems in the skin and the digestive and nervous systems.

      Vitamin B3 deficit

      illustration

    • Vitamin D deficit

      Vitamin D deficit

      Because vitamin D is essential for the body's utilization of calcium, a deficiency may result in severe loss of calcium and consequently a softening and weakening of bones.

      Vitamin D deficit

      illustration

     
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    Review Date: 8/29/2020

    Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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