Sleep loss weakened a social‑memory circuit in the brain, but caffeine precisely restored this pathway, reversing memory problems in sleep‑deprived animals.  

When the brain becomes the bottleneck, healthspan shrinks even if labs look “normal.” A brain‑first lens puts neural resilience at the center of longevity.  

A widely used anti-aging drug combo disrupted myelin and brain cell function in mice, raising new questions about brain resilience.

Lab-grown human neurons regained the ability to regrow connections, revealing a hidden flexibility in how the nervous system repairs itself.