Regarding pharmacological therapy for diabetes, sodium-glucose co-transporter-2 inhibitor (SGLT2i) has been in focus for various clinical efficacy. They include cardiovascular disease, chronic heart failure (CHF) and chronic kidney disease (CKD). Various discussion has been observed concerning the relationship among diabetes, frailty, sarcopenia, SGLT2i, aging and senile syndrome. By SGLT2i, weight and visceral fat area (VFA) are decreased, and the results of skeletal muscle index (SMI) and bone mineral content (BMC) vary in some reports. Using abdominal CT, bioelectrical impedance analysis (BIA), dual-energy X-ray absorptiometry (DXA), muscle mass and BMC have been lately studied. SGLT2i may maintain muscle mass and function.