I recently found a research article that suggests that most clinicians would agree, encountering a family history of bipolar disorder is not the status quo, and that , " it is quite rare to find families in which bipolar disorder affects multiple members over several generations," based on Classic Mendelian Genetics -Patterns of Inheritance. (Kerner, Berit. “Genetics of Bipolar Disorder.” The Application of Clinical Genetics 7 (2014): 33–42. PMC. Web. 17 Apr. 2017.)
As far as family inheritance patterns go, nature has been a predominant force over nurture in genetic inheritance of Bipolar disorder. It has been passed down through the generations, even when nurture provides the most ideal circumstances. I can identify in each generation, a person who has bipolar disorder or a similar affect; my son, my mom, all the way back to my 4th great grandfather.
The symptoms appear to begin with my 4th great grand father and the disorder continues down through his generational lines to the present day. He died in in 1871 as a patient at the Dorthea Dix Hospital,in Raleigh, North Carolina. The hospital is name after Dorthea Dix, one of my favorite historical American activist's. As a mother of child with bipolar disorder I am very involved in mental health advocacy. Having had prior knowledge of Dorthea Dix and her accomplishments, the discovery that my grandfather was a patient at this hospital was a"surreal"surprise .