<P> Many teens suffer from mental health issues in response to the pressures of society and social problems they encounter . Some of the key mental health issues seen in teens are: depression, eating disorders, and drug abuse . There are many ways to prevent these health issues from occurring such as communicating well with a teen suffering from mental health issues . Mental health can be treated and be attentive to teens' behavior . </P> <P> Many factors contribute to mental health problems, including: </P> <Ul> <Li> Biological factors, such as genes or brain chemistry </Li> <Li> Life experiences, such as trauma or abuse </Li> <Li> Family history of mental health problems </Li> </Ul> <Li> Biological factors, such as genes or brain chemistry </Li>

Which of the following best describes the world health organization's definition of health