Pellagra was first seen in populations where the dietary staple was

Name: Pellagra was first seen in populations where the dietary staple was
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Pellagra is caused by a deficiency of niacin (vitamin B3) which is found in high amounts in meat, poultry, fish, and whole grains. However, in populations where the main dietary staple is corn, which is low in niacin and has high levels of an amino acid called tryptophan that competes with niacin for absorption, pellagra became prevalent.

Pellagra Was First Seen in Populations Where the Dietary Staple