LONGEVITY with Nathalie Niddam#417: Depression and Weight Gain In Kids & Adults | A Long Term Post-COVID Problem & How To Reverse It With Dr. Cynthia KellerThree keys to joy restored
23:05–24:15 · 70s
Building on her serotonin insight, Keller identifies shared co-factors—P5P, methylfolate (BH4 pathway), and zinc—tied to both serotonin and dopamine, and says repleting them brought her patient’s joy back.