Estimated Average Requirement EAR : The average daily nutrient intake level estimated to meet the requirement of half the healthy individuals in a particular life stage and gender group. Estimated Energy Requirement EER : The average dietary energy intake that is predicted to maintain energy balance in a healthy adult of a defined age, gender, weight, height, and level of physical activity consistent with good health.
ND: Not determinable due to lack of data of adverse effects in this age group and concern with regard to lack of ability to handle excess amounts. Source of intake should be from food only to prevent high levels of intake. Macronutrients: Includes carbohydrate, fiber, fat, fatty acids, cholesterol, protein, and amino acids. Recommended Daily Allowance RDA : The average daily dietary nutrient intake level sufficient to meet the nutrient requirement of nearly all 97 to 98 percent healthy individuals in a particular life stage and gender group.
However, consuming too much of many nutrients can also cause health problems. ULs indicate the highest level of continuous intake of a particular nutrient that may be taken without causing health problems. However, a person who consumes dietary supplements, foods fortified with high levels of additional nutrients protein bars, for example or a diet based on only a few foods, might exceed the UL, and this could cause problems with nutrient toxicity.
When a nutrient does not have any known issue if taken in excessive doses, it is not assigned a UL. The graph below summarizes the meaning of the 4 DRI values for nutrient intake. DRI values for nutrient intake. This graph shows the risks of nutrient inadequacy and nutrient excess as we move from a low intake of a nutrient to a high intake. Starting on the left side of the graph, you can see that when you have a very low intake of a nutrient, your risk of nutrient deficiency is high. As your nutrient intake increases, the chances that you will be deficient in that nutrient decrease.
The point at which 50 percent of the population meets their nutrient needs is the EAR, and the point at which 97 to 98 percent of the population meets their needs is the RDA. The UL is the highest level at which you can consume a nutrient without it being too much. As nutrient intake increases beyond the UL, the risk of health problems resulting from that nutrient increases.
Note that there is a wide margin between the RDA and UL, showing that a person might safely eat much more than the RDA for a given nutrient without concerns of nutrient toxicity. However, be aware that the margin of safety varies depending on the nutrient.
This video reviews the different types of DRI values and what they mean. Individuals can use the DRIs to help assess and plan their diets. Keep in mind that the values established have been devised with an ample safety margin and should be used as guidance for optimal intakes. The DRIs are also used by professionals, government agencies, and the food industry. Here are some examples of their applications 2 :. Skip to content How do we know how much of a given nutrient people should eat, or how much is too much?
The DRI standards can be divided into two main categories: Recommendations for energy intake — How many calories are required, and how much energy should proportionately come from carbohydrate, fat, and protein? Recommendations for nutrient intake — How much of each nutrient should be consumed, and how much is excessive? Washington, D. Membership is free and comes with many benefits. Note: You must also be a member and log in to purchase articles.
Share This. Log In required for purchase : User name is required Password is required. Enter it here: When you buy this you'll get access to the ePub version, a downloadable PDF, and the ability to print the full article. Authors Devaney, Barbara L.
0コメント