tailieunhanh - Vegetarian Nutrition
Historical records of ancient times reveal that each nation passes through well-defined dietary stages. When the nation is young and struggling to develop, the people are generally poor and the diet is frugal, consisting chiefly of plant foods. As the nation becomes well established and its people prosper, animal foods become more plentiful. Thus, the interest in vegetarian dietaries has waxed and waned through the centuries. Historians have noted that, in times of plenty, interest in such diets has been low, while during periods of famine, the reverse has been true. During cycles of riotous living and profligacy, non-flesh diets have been spurned only to gain favor when political.
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