Bipolar Disorder in Adults - Key Statistics and Prevalence

Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in mood, energy, activity levels, and the ability to carry out day-to-day tasks.

There are four basic types of bipolar disorder; all of them involve clear changes in mood, energy, and activity levels. These moods range from periods of extremely “up,” elated, and energized behavior (known as manic episodes) to very sad, “down,” or hopeless periods (known as depressive episodes). Less severe manic periods are known as hypomanic episodes.

• 2.6% of adults in the U.S. live with bipolar disorder.
• Bipolar is the fourth most-common mental health problem worldwide after depression, anxiety and schizophrenia.
• In 2014, younger people were more likely to have bipolar than older people - 3.4% of 16-24 year olds screened positive but only 0.4% of 65-74 year olds screened positive.