What are the causes of bipolar depression?
Bipolar disorder is a serious but treatable mental illness affecting 5.7 million adults in the United States, about 2.6 percent of the population over 18 years of age, according to the National Institute of Mental Health. It used to be called manic-depressive disorder, due to the disruptive mood swings of the illness.Brain differencesPeople with bipolar disorder appear to have brain differences, according to the Mayo Clinic.
