Novel insights in muscular health and longevity

Muscular health and healthy aging

Frailty independently predicts all-cause mortality and increases premature-death risk 2–3-fold. Exercise is medicine; prevention starts early, as 80% of adolescents are insufficiently active. It is never too late to start, and consistent training supports healthier aging.

Exercise modifies aging-related biology

Cardiovascular exercise reduces chronic low-grade inflammation, reflected by IL-6 and hs-CRP, and influences the gut microbiome. Strength training stimulates irisin, a myokine with anti-inflammatory effects and potential relevance for brain health and Alzheimer’s disease.

Recovery preserves muscle adaptation

Combating frailty requires not only strength and aerobic training but also recovery. Adequate protein intake, including branched-chain amino acids and whey protein after training, supports muscle repair and growth. Sleep and stress reduction are necessary to optimize recovery and muscle health.

The continuing education session “Novel insights in muscular health and longevity,” organized by Klinik Barmelweid and presented by Dr. Anna Erat, addresses muscular health as a central determinant of healthy aging and longevity. Dr. Erat emphasizes that increasing health span and reducing sick span require a preventive, public-health-oriented approach beginning early in life, as physical inactivity and frailty are major drivers of morbidity and premature mortality. She reviews biological hallmarks of aging, including mitochondrial function, proteostasis, stem cell reserve, DNA repair, telomere stability, and epigenetic regulation, and discusses biological clocks as emerging but still imperfect tools for assessing biological age and organ-specific aging. A key focus is the role of exercise as medicine: cardiovascular training and strength training improve fitness, reduce chronic low-grade inflammation, modulate the gut microbiome, and may counteract frailty even when initiated later in life. Dr. Erat also highlights sex-specific considerations in exercise medicine, the cautious but not prohibitive use of GLP-1 receptor agonists with attention to lean mass preservation, and the currently limited evidence for NAD+ infusions and non-GLP-1 peptide therapies. In addition, she underscores the importance of recovery, adequate protein intake including branched-chain amino acids, sleep, stress regulation, and heart rate variability as factors influencing muscle adaptation and resilience. In the discussion, she recommends basic pre-exercise assessment for adults initiating training, including blood work and at least an ECG, with optional follow-up measures such as VO2 max testing and heart rate variability monitoring according to training ambition.