The United States is currently managing two public health crises that have been building in parallel for decades. One is metabolic. The other is psychiatric. Neither shows signs of reversing. And for the most part, medicine has treated them as separate problems with separate solutions. They are not separate. The evidence linking metabolic dysfunction to psychiatric illness has been accumulating for years, but it has not yet crossed over into the mainstream conversation about

Something is shifting in how people think about health, and it is moving faster than most clinicians and researchers have caught up to. A few years ago, the longevity movement was a niche pursuit, associated with wealthy tech founders tracking their biological age and experimenting with obscure supplements. Today it has migrated into the mainstream. People of all ages are wearing devices that monitor their sleep architecture, heart rate variability, and recovery status. They