Hippocrates believed that treatment for mental disorders should involve:

Hippocrates was a follower of the classical thinking at the time, which contested that all illnesses (and health) was based upon the four bodily humors: blood/phlegm/black bile/yellow bile. Any time these were out of balance, the patient was thought to become ill: by bringing these factors back into their proper respects, the illness was thought to be cured.

True is the correct answer