The symptoms of dietary deficiency of niacin (which results in pellagra) will be less severe if the diet has a high content of:: (A) Tryptophan, (B) Tyrosine, (C) Thymine, (D) Thiamine
Answer is A. a. Tryptophan(Ref: Nelson's 20/e p 325, Ghai 8/e p 118)Tryptophan can be converted to nicotinamide adenine dinucleotide (NAD) 60mg tryptophan gives rise to 1mg niacin.