Why Brain Youthfulness May Be Different

(0:00) David Friedberg intros Bryan Johnson

(0:54) Why Bryan Johnson did 5-MeO-DMT

(12:56) What brain scans actually show

(18:36) Psychosis, bad trips, and life-altering decisions

(26:23) The next frontier: organoids and gene therapy

(33:26) GLP-1s, abundance, and human optimization

(35:35) The longevity drug nobody's talking about?

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