Behavioral health and substance-related disorders affect approximately 20 percent of Americans. Of those with a substance use disorder, approximately 60 percent also have a mental health disorder. These disorders account for a substantial burden of disability, have been associated with an increased risk of morbidity and mortality from other chronic illnesses, and can be risk factors for death by suicide, incarceration, and homelessness. They can compromise a person's ability to seek out and afford health care, and to adhere to care recommendations.