The meta‐analysis showed that per 1 g/dL increase in serum albumin was significantly associated with a reduced risk of sarcopenia overall (crude OR = 0.91; 95% CI: 0.87–0.95; I2 = 0.0%; p < 0.001; adjusted OR = 0.91; 95% CI: 0.79–1.05; I2 = 67.5%; p = 0.201; Figure 5). The gene discussed is ALB; the disease is sarcopenia.