6 ketamine infusions, over 2-3 weeks (pre-print study) showed:

+ depression scores: -50%
+ overall epigenetic age: -1-2 years
+ system-age: -0.5 to 3 years
+ metabolic age: -2.9 years
+ musculoskeletal age: -2.8 years
+ brain age: -1.5 years
+ inflammation age: -1.9 years