Sarcopenia After 40 — Silent Muscle Loss Explained | 2026
Sarcopenia After 40 — Silent Muscle Loss Explained | 2026 Most people have heard of osteoporosis — the gradual thinning of bones that tends to accelerate after middle age and carries real consequences for fractures, mobility, and independence. It's a household word. Public health campaigns have raised awareness of it for decades. Bone density scans are a routine part of healthcare for adults in their fifties and sixties. Sarcopenia is the muscular parallel. The same kind of slow, accumulating, largely symptom-free tissue loss — but in skeletal muscle rather than bone — that begins earlier than most people expect and carries metabolic and functional consequences that are only now being understood at their full scale. The word itself comes from the Greek for "poverty of flesh." It describes the progressive, age-related loss of skeletal muscle mass, strength, and function that research has now established begins not in old age, but in the fourth decade of life. In y...