Recommended daily allowances
While each person needs a different amount of nutrients according to size, age, sex, state, and lifestyle, nevertheless an average can be calculated as follows:
FAT SOLUBLE VITAMINS:
WATER SOLUBLE VITAMINS:
* It is generally assumed that sodium and chlorine requirements are easily met during eating normal foods. The more frequent problem is too much.
The amounts required of some nutrients can be higher under certain circumstances, as follows:
Heart problems require reduction in total fat, animal fat, and salt
Natural foods and products made from them contain irregular amounts of nutrients. No one food contains all nutrients. Therefore, to obtain a balanced (adequate) diet, one has to eat a variety of foods. This can be done in two ways:
1. Knowing all the nutrient contents of all foods and calculating the nutrients of the foods eaten (a very difficult method).
2. Classifying foods in nutrient categories, and then using the recommended number of servings of each group (a relatively easy method).
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