Mental health disorders, including depression and anxiety, describes a wide variety of mental health issues — disorders affecting thinking, mood, and behavior. Examples of mental disorders include schizophrenia, addictive behaviors, and eating disorders. Many people experience mental health concerns occasionally. But a mental health “concern” morphs into a mental illness when persistent symptoms and signs create recurrent stress and affect a person’s ability to function. Studies have linked anxiety, depression, and other disorders to genetics.