Through CONUT, mild malnutrition (n = 635) also exhibited significantly higher levels of NT‐proBNP compared with normal nutrition (n = 304) [MD: 1160.05, 95% CI (701.04–1619.07, I2 = 0%, P < 0.01) (Figure5; divided by 100)]. The gene discussed is NPPB; the disease is nutritional deficiency disease.