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Vitamins and minerals are essential to overall health. Deficiencies in any of these nutrients alter functions in the body and even lead to disease. The Recommended Daily Allowances (RDAs), also known as Recommended Daily Intakes (RDIs) or Dietary Reference Intakes (DRIs), are the average daily intake amount of specific vitamins and minerals deemed to be safe and recommended for the diet in order to reach nutrient requirements. For some vitamins and minerals, the RDAs vary between men and women due to different physiological needs.

According to the Food and Nutrition Board of the Institute of Medicine, the RDAs for fat-soluble vitamins for men are as follows: Vitamin A is 900 micrograms, vitamin D is 15 micrograms, and vitamin E is 15 milligrams. For water-soluble vitamins, vitamin C is 90 milligrams, thiamin is 1.2 milligrams, riboflavin is 1.3 milligrams, niacin is 16 milligrams, vitamin B6 is 1.3 milligrams, vitamin B12 is 2.4 micrograms, and folate is 400 micrograms.

What Are the Tolerable Upper Limits of Vitamins?

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For women, the RDAs for fat-soluble vitamins are as follows: 700 micrograms for vitamin A, 15 micrograms of vitamin D and 15 milligrams of vitamin E. The RDAs for water-soluble vitamins are slightly different for women than men. Vitamin C is 75 milligrams, thiamin is 1.1 milligrams, riboflavin is 1.1 milligrams, niacin is 14 milligrams, B6 is 1.3 milligrams, B12 is 2.4 micrograms, and folate is 400 micrograms.

For men, the Institute of Medicine reports the RDAs for minerals as follows: 1,000 milligrams of calcium, 8 milligrams of iron, 150 micrograms of iodine, 55 micrograms of selenium, 11 milligrams of zinc, 420 milligrams of magnesium and 900 micrograms of copper.

What Are the Benefits of Vitamin B-1 or Thiamine?

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Mineral Recommended Daily Allowances for women, ages 31 to 50, vary slightly from men. Calcium is 1,000 milligrams, iron is 18 milligrams, iodine is 150 micrograms, selenium is 55 micrograms, zinc is 8 milligrams, magnesium is 320 milligrams, and copper is 900 micrograms.