【答案解析】Health largely (to a great extent) depends on exercise, diet (food) and mood. With the increasing pressure from study and work, the effect of mood on health has attracted more attention. Good mood makes chronic diseases less likely (brings less chance of developing chronic diseases) / Those in a good (happy) mood are less likely to develop chronic diseases and are more efficient at work / can work more efficiently / have a higher work efficiency while those who suffer from chronic depression (have been depressed for a long time) are not only disinterested in anything / interested in nothing, but are prone to suicide. An effective way to prevent (ward off) depression is to relieve stresses and find relaxation.