What is a characteristic of bipolar disorder in regards to its family history?

Bipolar disorder is known for its significant genetic component, and having a family history of the disorder markedly increases an individual's risk of developing it. Studies show that individuals with a first-degree relative, such as a parent or sibling, who has bipolar disorder have a higher likelihood of developing the condition themselves compared to the general population. This familial trend suggests that inherited genetic factors play a crucial role in the onset of bipolar disorder.

In contrast, the incorrect options suggest various misconceptions about the genetic predisposition of bipolar disorder. The idea that it rarely runs in families undermines the substantial evidence supporting genetic links. Stating that family history is not a risk factor ignores the well-documented increase in risk with familial connections. Finally, claiming that only maternal history affects risk overlooks the impact of paternal history as well; both maternal and paternal genetics contribute to the likelihood of developing the disorder. Thus, the correct understanding is that a family history of bipolar disorder significantly increases the risk for developing it.