Anecdotal benefits I've experienced (as a typically healthy person):
- Improved mood for a least a couple months (happier, more awake/aware, calmer, less fatigue, more motivated)
- Reduced feelings of stress and anxiety
- Increased empathy for others
- Increased self-awareness, in particular of bad habits. This in turn helps me improve my diet as well as keep good physical/mental exercise habits.
- Increased creativity and openness to new ideas.