ren, siblings) are more likely to have a mood disorder than the relatives of those who do not have bipolar disorder. Twin studies indicate that if one twin presents with a mood disorder, an identical twin is approximately three times more likely than a fraternal twin to have a mood disorder. When both twins have the disorder is 80% for identical twins as compared to only 16% for fraternal twins. However, if you have bipolar disorder and your spouse does not, there i
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