Leyla Weighs In: How Long-Term Statin Use Affects Muscle Mass and Strength

Leyla Muedin, a registered dietitian nutritionist, discusses a UK Biobank analysis published in the Journal of Cachexia, “Sarcopenia and Muscle” (Nov 2025) linking continuous long-term statin use (e.g., Lipitor, Zocor, Crestor) to accelerated declines in grip strength and appendicular lean mass compared with never-users. Among 35,557 with follow-up data, grip strength declined by a mean 0.315 kg/year and appendicular lean mass by 0.057 kg/year in statin users; findings persisted after adjustment for age, sex, BMI, comorbidities, and a pharmacogenomic statin-response score. Leyla notes possible mechanisms (CoQ10/mevalonate pathway effects, mitochondrial dysfunction, apoptosis, calcium disruption, insulin resistance) and advises monitoring musculoskeletal health, supporting diet and regular physical activity, while not interpreting results as a reason to stop prescribing statins.