How does someone acquire a mental illness?
Scientists are still studying how people become mentally ill, so we do not know as much as we would like about how a person develops a mental disorder. There may be genetic causes or inherited vulnerabilities, prenatal care injuries or difficulties, exposure to toxins, or other unknown sources. Poverty, homelessness, overcrowding, stressful living conditions, frequent exposure to violence, abusive parents or severe marital or relationship problems can contribute to the development of a mental illness.