Social & Preventive Medicine General cd311ea5 Niacin deficiency in a maize-eating population is due to- A High Tryptophan B High lsoleucine C High leucine D High Phenylalanine High-Yield Explanation Ans. is 'c' i.e., High Leucine Excess of Leucine interferes in conversion of Tryptophan into Niacin, and aggravates the pallagrogenic action of inake.