How rare is it to develop bipolar without family heredity meaning parents etc? is it rare or?

While many persons with bipolar disease have family heredity, some persons develop the disease during times of high stress, drug use or alcohol use. If you are concerned about yourself, get help from a licensed psychotherapist or Psychiatrist. They can diagnose and treat Bipolar disease.

If you have a first-degree relative with Bipolar Disorder, your lifetime risk is 5 - 10% If your identical twin has bipolar disorder, it is 40 -70% The lifetime prevalence of bipolar disorder without a family history of bipolar disorder is 1%.