Weakness/lethargy/weight loss; normal Hb: 1 (M); mild anemia: 3 M (2 undiagnosed T2DM, 1 previously diagnosed diabetic on hypoglycemic oral medicine, anti-hypertensive medicine with high BP; 1 undiagnosed HT); moderate anemia: 3 (1 F with pre-diabetes, undiagnosed HT, low protein; 2 M, one previously diagnosed diabetic with undiagnosed HT). The gene discussed is GSTM1; the disease is diabetes mellitus.