Bryan Johnson· Author
Brain age: 42 (I’m 47) ✔ Hippocampi are in the 72nd percentile ✔ Brain volume top 73rd percentile ✔ Brain inflammation: less than 80% of my age group ✔ Brain gray matter: top 84th percentile ✔ Brain white matter: top 80th percentile lesion free ✔ LV/Brain ratio is 1% (better than 64% of my peers).