Can you inherit bipolar disorder or depression?

Dr. Tracy Marks addresses a viewer's question about the risk of bipolar disorder in grandchildren. She explains that while the general population has a 1% risk, having a first-degree relative with bipolar disorder increases the risk to 15-30%. The video discusses Mendelian genetics using sickle cell anemia as an example and contrasts it with the complex genetic factors of bipolar disorder. Family and twin studies are used to estimate risk, highlighting the importance of first-degree relatives. The video also covers the genetic aspects of depression and the influence of family history on medication response.

What new insight or understanding did you gain from this video?