1. Preliminary definitions
According to TRÉMOLIÈRES, a food is a foodstuff containing nutrients and therefore nourishing, likely to satisfy the appetite and therefore appetizing, and accepted as food in a given society, and therefore customary.
The advantage of this definition is that it shows the psychological and social dimension of human nutrition. However, in the usual but more simplified way, foods are products of agricultural and industrial origin whose consumption serves to cover nutritional needs.
Food products are actually complex mixtures from the external environment, some of whose components are incorporated into the body to build, maintain and/or operate it.
Examination of the atomic composition of the human body shows that a dozen elements (H, O, C, N, Ca, P, K, S, Na, Cl, Mg, Fe), from...
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