The ABCs of Nutrient Deficiencies and Toxicities.

Vitamins and minerals are part of a well-balanced diet. They are essential for normal growth and development, which is especially crucial for the pediatric population. Vitamins are divided based on their solubility into fat-soluble vitamins, which include vitamins A, D, E, and K and water-soluble vitamins, which include the B vitamins and vitamin C. Minerals include calcium, magnesium, and phosphorus. Trace minerals are micronutrients and include copper, zinc, selenium, chromium and manganese. The pediatrician is often the first health care provider to interface with patients, allowing them to pick up on nutritional derangements. This article reviews the basic sources, absorption, metabolism as well as the signs and symptoms that arise in deficient and toxic states of fat-soluble vitamins, water-soluble vitamins, minerals, and trace elements. [Pediatr Ann. 2019;48(11):e434-e440.].

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