Health is mental health and physical health.
Mental Health is essential for high productivity. Our brain produces hormones like Melatonin and Seratonin which are essential for relaxation. This can be produced with 4 sources of energy ie Food, Sleep, Meditation, and Breath. The 7 layers of existence ie Mind, Body, Breath, Intellect, Memory, Ego and Self
Reference :- https://www.artofliving.org/levels-existence.
It is better to cure any mental and physical illness naturally then with medicines to avoid any side effects. So the best treatment is naturopathy, nutrition, yoga, exercise, ayurveda, homeopathy and allopathy in that order.