Metabolic HealthInsulin Resistance in Aging Is a Whole-Body Failure, Not Just a Blood Sugar Problem
Most people think of insulin resistance as a blood sugar issue, but a new review argues it's really a sign that multiple organ systems are losing their ability to bounce back. In older adults, insulin resistance arises from shrinking muscle mass, accumulating abdominal fat, misfiring mitochondria, chronic low-grade inflammation, and hormonal shifts — all compounding each other. Crucially, the brain is also affected, linking insulin resistance to cognitive decline, depression, and frailty. The authors propose treating this as a 'multisystem reserve failure' rather than an isolated metabolic defect, opening the door to broader therapeutic strategies that combine lifestyle changes, targeted medications, and emerging anti-aging interventions.
