You bet it is. I am sure my mom was bipolar too and her eccentric brother I am convinced was schyzophrenic. There is talk of their father, my grandfather, that suggests to me significant mental illness - made all the worse by obvious wartime PTSD.

In my generation I have two cousins with mood disorders. One's son is schyzophrenic and the other's son has GAD so bad he can't go to school.

I worry about my own children. My daughter is exhibiting some signs I recognize all too well as bipoar and my son himself admits he suffers terribly from Anxiety and OCD.

Hereditary? Heck yeah!