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Is tryptophan a necessary part of the human diet?

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It is one of several essential amino acids needed in the diet; human beings cannot synthesize it from simpler metabolites. Young adults require about 7 mg of this amino acid per day per kg (3 mg per lb) of body weight.

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Similar questions: Is tryptophan important for humans to have in their diet? How much tryptophan do humans need? Do humans need tryptophan? [ Hide these questions ]

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