Dietary Reference Intake Of Iron

The dietary reference intake dri is a system of nutrition recommendations from the institute of medicine iom of the national academies united states.

Dietary reference intake of iron. The dris represent the most current scientific knowledge on nutrient needs of healthy populations. On the basis of intake data and isotope studies iron bioavailability has been estimated to be in the range of 14 18 for mixed diets and 5 12 for vegetarian diets in subjects with no iron stores and these values have been used to generate dietary reference values for all population groups. Based on a heme iron intake of 11 percent of total iron for children 1 to 8 years old the upper limit of absorption is 18 percent see factors affecting the iron requirement algorithms for estimating dietary iron bioavailability and appendix table i 2. Table 1 dietary reference intakes for iron by life stage group dri values mg day eara rdab aic uld males females males females life stage group 0 through 6 mo 0 27 40 7 through 12 mo 6 9 6 9 11 11 40 1 through 3 y 3 0 3 0 7 7 40 4 through 8 y 4 1 4 1 10 10 40 9 through 13 y 5 9 5 7 8 8 40 14 through 18 y 7 7 7 9 11 15 45 19 through 30 y 6 0 8.

The dietary reference intakes dris are developed and published by the institute of medicine iom. This recommendation relates to breast fed babies. In fact a half cup 86 gram serving of cooked black beans provides around 1 8 grams of iron or. Mostly a hereditary disease hemochromatosis is the result of a genetic mutation that leads to abnormal iron metabolism and an accumulation of iron in certain tissues such as the liver pancreas and heart.

The ai for 0 6 months was calculated by multiplying the average intake of breast milk 0 78 l day by the average concentration of iron in breast milk 0 26 mg l and rounding butte et al 1987 dewey lonnerdal 1983 lipsman et al 1985 picciano guthrie 1976 vaughan et al 1979. It was introduced in 1997 in order to broaden the existing guidelines known as recommended dietary allowances rdas see below the dri values differ from those used in nutrition labeling on food and dietary supplement products in the u s. Intake recommendations for iron and other nutrients are provided in the dietary reference intakes dris developed by the food and nutrition board fnb at the institute of medicine iom of the national academies formerly national academy of sciences. The iron in formula is much less.

Dri is the general term for a set of reference values used for planning and assessing. The iom has set tolerable upper intake levels of iron table 11 2 dietary reference intakes for iron. These include average requirement ar and population reference intake pri. Predicted absorption values at a serum ferritin concentration of 30 µg l of 16 for men and 18 for women were used to convert physiological requirements to dietary iron intakes.