Example: A person needs 65,438+0,800 calories per day according to the situation, with protein allocation of 65,438+05%, lipid allocation of 20% and carbohydrate allocation of 65%. Multiply 65,438+05% by 65,438+0,800 = 270 kcal, and divide 270 by calorific value 4 = 67.5 (g
Extended data:
Recommended intake RNI:
RNI is equivalent to traditional RDA, which is an intake level that can meet the needs of most individuals (97% ~ 98%) in a certain group of gender, age and physiological conditions. Long-term intake of RNI level can meet the human body's demand for this nutrient, maintain health and maintain appropriate reserves in tissues.
The main purpose of RNI is to serve as the target value of daily intake of this nutrient by individuals. RNI is ear-based. If the standard deviation of the ear is known, RNI is defined as the ear plus two standard deviations, that is, RNI = ear +2SD. If the information about demand change is not enough to calculate SD, it is generally assumed that the coefficient of variation of spike is 10%, then RNI = 1.2 × spike.
RNI plays a limited role in evaluating individual nutritional intake. If the individual's intake is lower than RNI, it can be considered that there is a risk of insufficient intake; If the average intake of individuals reaches or exceeds RNI, it can be considered that there is no danger of insufficient intake.
Dietary intake or any other single index can not be used as the basis for the average individual nutritional status. Intake is often lower than RNI, which may mean that further biochemical tests or clinical examinations are needed to evaluate their nutritional status.
Baidu Encyclopedia-Dietary Nutrient Intake of Chinese Residents