Table of Contents I. What Causes Depression? II. Antidepressants III. Psychotherapy for Depression IV. Keeping in Touch V. Look After Yourself What Causes Depression? Depression is a complex mental health disorder that affects more than 16 million American adults. Depression is also known as major depressive disorder or clinical depression and can cause both mental and physical symptoms. The most well-known symptom is feeling depressed. Feeling depressed is a common emotion that affects