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Chromium deficiency is described as the consequence of an insufficient dietary intake of the mineral chromium. Chromium was first proposed as an essential element for normal glucose metabolism in 1959, [ 1 ] but its biological function has not been identified. [ 2 ]
Recommended Dietary Allowances (RDA), the daily dietary intake level of a nutrient considered sufficient by the Food and Nutrition Board of the Institute of Medicine to meet the requirements of 97.5% of healthy individuals in each life stage and sex group. The definition implies that the intake level would cause a harmful nutrient deficiency in ...
A single slice (68 g) of beef liver exceeds the tolerable upper intake level of vitamin A (6410 μg preformed vs. UL for preformed = 3000 μg). [4] 100 g cod liver contains 5 mg of vitamin A and 100 μg of vitamin D. [5] Liver contains large amounts of vitamin B 12, and this was one of the factors that led to the discovery of the vitamin. [6]
Mineral deficiency is a lack of the dietary minerals, the micronutrients that are needed for an organism's proper health. [1] The cause may be a poor diet , impaired uptake of the minerals that are consumed, or a dysfunction in the organism's use of the mineral after it is absorbed.
The Stigler diet is an optimization problem named for George Stigler, a 1982 Nobel laureate in economics, who posed the following problem:. For a moderately active man weighing 154 pounds, how much of each of 77 foods should be eaten on a daily basis so that the man’s intake of nine nutrients will be at least equal to the recommended dietary allowances (RDAs) suggested by the National ...
The recommended daily allowance of zinc is 11 mg for older men and 8 mg for older women, with an upper tolerable limit of 25–40 mg per day, including both dietary and supplemental sources. However, individuals over 60 often consume less than 50% of the recommended zinc intake, which is crucial for proper body function.
As of 27 May 2016, the percentage of daily value was revised to 35 μg to bring the chromium intake into a consensus with the official Recommended Dietary Allowance. [115] [116] A table of the old and new adult daily values in the United States is provided at Reference Daily Intake.
Although the safety of daily chromium doses of up to 1,000 μg has been shown, there are some reports of serious adverse effects by using chromium picolinate, including kidney failure from a six-week course of 600 μg per day and liver disease after using 1,200 to 2,400 μg per day over four to five months.