What has been learned from adoption studies about the etiology of bipolar disorder type I (BPI)?

Updated: May 30, 2019
  • Author: Stephen Soreff, MD; Chief Editor: Glen L Xiong, MD  more...
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Adoption studies prove that a common environment is not the only factor that makes bipolar disorder occur in families. Children whose biologic parents have either BPI or a major depressive disorder remain at increased risk of developing an disorder, even if they are reared in a home with adopted parents who are not affected. Frey and colleagues’ work supports the genetic contributions in bipolar disorder. [45, 46]

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