Ceffa et al. (1987) reported the effects on morning post‐prandial glycemic and insulin metabolism of a test meal with or without 3.2 g guar gum given to 22 subjects including 8 T2DM non‐insulin‐dependent patients, 7 insulin‐dependent diabetics, and 7 healthy individuals. The gene discussed is INS; the disease is type 2 diabetes mellitus.