Discuss the various methods used for studying the nutrient requirements.

The various methods used for studying the nutrient requirements are -

1 Population Survey of Dietary Intakes of Nutrients The basis of this method rests on the premise that average dietary intake of nutrients by healthy members of a group of individuals at a specific life stage and gender represents the requirement of this group. This was the only method available for a long time to estimate the nutrient needs. All early recommendations were based on this method. The limitations of the method are that since the average is calculated from usual intakes of healthy individuals eating to appetite, the method can both over  or underestimate the requirements. The limitation of this method is best illustrated by the early recoinmendations for protein. The first ever recommendation that was formally adopted ______ _______ __________ __________ ________ ______ _______ _________ ___.
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