Baseline differences may impact on relationship between dietary tryptophan and risk of obesity and type 2 diabetes

Recently,we read with great interest an article reporting a relationship between dietary tryptophan and the risk of obesity and type 2 diabetes(T2D).However,baseline characteristics differed among tertiles of cumulative dietary tryptophan intake in that study,which may be a confounding factor for the relationship between dietary tryptophan and the risk of obesity and T2D.