How Aging Rewires Your Immune System

Centenarians' immune systems aren't declining with age—they're fundamentally remodeled into a different activated state that enables longevity, revealing that aging immunity is a reorganization problem rather than a deterioration problem. This reframes intervention strategies from fighting inevitable decline toward targeted restoration and reactivation of senescent immune cells. Understanding this shift changes how we approach healthy aging, moving from broad immune boosting to precision approaches that reset immune function to healthier states.