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Vitamina A

Nombres alternativos:

Retinol; Carotenoides

Fuentes alimenticias:

La vitamina A proviene de fuentes animales como los huevos, la carne, la leche, el queso, la crema de leche, el hígado, el riñón y el aceite de hígado de bacalao y de hipogloso. Sin embargo, todas estas fuentes, a excepción de la leche descremada fortificada con vitamina A, tienen un alto contenido de grasa saturada y colesterol .

El retinol es un tipo activo de vitamina A y se encuentra en los hígados de animales, la leche entera y algunos alimentos fortificados.

Las fuentes de betacaroteno son las zanahorias, la calabaza, la batata o camote, el melón, el calabacín, el melón cantalupo, la toronja, el albaricoque, el brócoli, la espinaca y la mayoría de las hortalizas de hoja verde. Cuanto más intenso es el color de la fruta u hortaliza, mayor es el contenido de betacaroteno. Estas fuentes vegetales de betacaroteno no tienen grasa ni colesterol.

Referencias:

Ford MD,  Clinical Toxicology . 1st ed. Philadelphia, Pa: WB Saunders; 2001:297

Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc . National Academy Press, Washington, DC, 2001.

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