Mental health is a state of emotional and psychological well-being in which an individual is able to use his or her cognitive and emotional capabilities, function in society, and meet the ordinary demands of everyday life.
Mental illness are serious disorders which can affect our thinking, mood, and behavior. There are many causes of mental disorders. Genes and family history may play a role. Life experiences, such as stress or a history of abuse, may also matter. Biological factors can also be part of the cause.