Yes, bipolar disorder can run in families, which means genetics play a part. But having a relative with bipolar disorder doesn’t mean you’ll definitely develop it yourself.

What is bipolar disorder?

Bipolar disorder is a mental health condition that affects your mood, causing periods of extreme highs (mania or hypomania) and lows (depression). It’s a condition that many people live with, and support is available.

Is bipolar disorder genetic?

There is a genetic link to bipolar disorder. If you have a parent, sibling, or twin with bipolar disorder, your risk of developing it is higher than average.  

For example, if a close family member has bipolar disorder, there’s about a 13 in 100 chance you may develop it too. The risk increases if both parents or a twin have the condition.

However, most people with a family history of bipolar disorder do not go on to develop it themselves. This shows that while genes are important, they are not the only factor. Your environment and life experiences also play a role.

No single gene causes bipolar disorder. Instead, it’s likely to be a combination of several genes and other factors that increase your risk.

What should I do if I’m worried?

If you’re concerned about your mental health or your family history, you’re not alone. You can find more information about bipolar disorder and support for families on our advice page.