... Napoleon took acting lessons?
Image-makers have noted a direct relationship between politicians’ effectiveness and their use of acting skills.

... doctors study acting?
Recently, researchers from Washington University and from the Group Health Cooperative joined forces to train doctors in how to show those emotions, that are necessary when working with patients. 
Their teaching was based on the methods used by professional acting schools.  They noted the special importance of relating to patients through emotions, in a time of increased dependence on technology.

… theatre prevents depression?
Psychologists have found that participation in artistic activities increases endorphin output, which helps prevent depression, reduce stress, promotes good health, and manages body weight.