There’s more to depression than just feeling sad all the time, says Dr. Prakash Masand, a psychiatrist and president of Global Medical Education. Symptoms of depression can include psychomotor (cognitive functions and physical movement) activity changes, trouble sleeping, loss of interest in pleasurable activities, feelings of guilt or hopelessness, decreased energy, trouble concentrating, appetite changes, while others may also have suicidal thoughts or attempts.
One in six people will develop major depression in their lifetime, Masand says. "Major depression affects 121 million people worldwide. Two out of three individuals with depression do not receive adequate treatment."