I can't watch the video right now, but do they also talk about mental health?

I also think people are increasingly treating any kind of mental distress as a medical condition, to be treated by drugs or other medical interventions, or behavioral specialists. Just like physical health can be improved with better diet, more exercise, etc, I think mental health can be improved with better "mental diet"--what you consume and think about--and mental exercise, i.e. engaging in hobbies or activities that help you relax.