Food is more than a collection of nutrients. Human beings all over the world share a common need to meet certain fundamental conditions for survival. One of these needs is securing an adequate diet, which will provide energy and the various nutrients necessary for metabolic functioning. The range of human nutritional requirements is fairly narrow, but the ways in which these similar requirements are met are hugely diverse. Vastly differing dietary patterns, utilizing thousands of different foodstuffs and combinations of foodstuffs are capable of achieving the same end-that of survival.
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