According to CDC and Healthy People 2020:
"Mental health is essential to a person's well-being, healthy family and interpersonal relationships, and the ability to live a full and productive life. People, including children and adolescents, with untreated mental health disorders are at high risk for many unhealthy and unsafe behaviors, including alcohol or drug abuse, violent or self-destructive behavior and suicide - the 11th leading cause of death in the United States for all age groups and the second leading cause of death among people age 25 to 34.
Mental health disorders also have a serious impact on physical health and are associated with the prevalence, progression and outcome of some of today's most pressing chronic diseases, including diabetes, heart disease and cancer. Mental health disorders can have harmful and long-lasting effects - including high psychosocial and economic costs - not only for people living with the disorder, but also for their families, schools, workplaces and communities.
Fortunately, a number of mental health disorders can be treated effectively, and prevention of mental health disorders is a growing area of research and practice. Early diagnosis and treatment can decrease the disease burden of mental health disorders as well as associated chronic diseases. Assessing and addressing mental health remains important to ensure that all Americans lead longer, healthier lives."