Do I have bipolar disorder because my father had schizophrenia?

According to researchers at Stockholm's Karolinska Institute, schizophrenia and bipolar disorder may have common genetic causes. Researchers studied 9 million Swedish people during a 30-year period and discovered that "relatives of people with schizophrenia or bipolar disorder had an increased risk of both disorders." The study may also suggest that "the two conditions may simply be different manifestations of the same disease."

The article from Reuters also points out that Seroquel and Zyprexa are used to treat both disorders, which may lead people in the psychiatric industry to further investigate the link between the two illnesses. Here are some interesting discoveries from the study:

 *  First-degree relatives (parents, siblings, or offspring) of people with either schizophrenia or bipolar disorder were at increased risk for both of these conditions.

 * If a sibling had schizophrenia, full siblings were nine times more likely than the general population to have schizophrenia and four times more likely to have bipolar disorder.

 * If a sibling had bipolar disorder, they were eight times more likely to have bipolar disorder and four times more likely to have schizophrenia.

 * Half siblings who shared the same mother were 3.6 times more likely to have schizophrenia if their half sibling had schizophrenia and 4.5 times more likely to have bipolar disorder if their half sibling had bipolar disorder. Half siblings who shared the same father had a 2.7-fold increase in schizophrenia risk and a 2.4-fold increase in bipolar disorder.

 * Adopted children with a biological parent with one of the disorders had a significant increase in risk for the other.

Creepy. My father's schizophrenia didn't begin to manifest itself until he was in his 40s. The same is true for my two other aunts as well. It may be silly but I live in fear that I may have the same problem. I'll eventually get a psychiatric advance directive in place just in case that day ever comes. After seeing three family members with debilitating schizophrenia/paranoia, sometimes it gets to the point where the benefits of being drugged up outweigh the risks.

Mood rating: 6