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How does bipolar run in families?

Author

Sarah Smith

Published Jan 19, 2026

Bipolar disorder is frequently inherited, with genetic factors accounting for approximately 80% of the cause of the condition. Bipolar disorder is the most likely psychiatric disorder to be passed down from family. If one parent has bipolar disorder, there's a 10% chance that their child will develop the illness.

How is bipolar disorder passed genetically?

The inheritance pattern of bipolar disorder is unclear. Overall, the risk of developing this condition is greater for first-degree relatives of affected individuals (such as siblings or children) as compared to the general public.

Does the bipolar gene skip a generation?

According to medical experts, bipolar disorder can also skip generations. Bipolar disorder is a complex condition, and scientists do not fully understand the role that genes play. A combination of many different genes likely increases a person's chance of developing this condition.

When does bipolar usually start?

Although bipolar disorder can occur at any age, typically it's diagnosed in the teenage years or early 20s. Symptoms can vary from person to person, and symptoms may vary over time.

Is bipolar inherited from the mother or father?

Bipolar disorder is the most likely psychiatric disorder to be passed down from family. If one parent has bipolar disorder, there's a 10% chance that their child will develop the illness. If both parents have bipolar disorder, the likelihood of their child developing bipolar disorder rises to 40%.

16 related questions found

Does bipolar worsen with age?

Bipolar may worsen with age or over time if this condition is left untreated. As time goes on, a person may experience episodes that are more severe and more frequent than when symptoms first appeared.

What is it like to have a bipolar parent?

It can be very hard living with a parent who has bipolar disorder because that person may do or say things that make children feel bad, scared, sad, angry and often confused. This can happen when the parent is in a high or low mood.

What are the signs of bipolar in a woman?

Bipolar disorder symptoms in females

  • feeling “high”
  • feeling jumpy or irritated.
  • having increased energy.
  • having elevated self-esteem.
  • feeling able to do anything.
  • experiencing reduced sleep and appetite.
  • talking faster and more than usual.
  • having rapid flights of ideas or racing thoughts.

What are the warning signs of bipolar?

Common signs of bipolar disorder

  • feeling overly happy or “high” for long periods of time.
  • feeling jumpy or “wired”
  • having a reduced need for sleep.
  • talking very fast, often with racing thoughts and rapid changes of topic.
  • feeling extremely restless or impulsive.
  • becoming easily distracted.

What are 4 signs of bipolar disorder?

Symptoms - Bipolar disorder

  • feeling sad, hopeless or irritable most of the time.
  • lacking energy.
  • difficulty concentrating and remembering things.
  • loss of interest in everyday activities.
  • feelings of emptiness or worthlessness.
  • feelings of guilt and despair.
  • feeling pessimistic about everything.
  • self-doubt.

How do doctors test you for bipolar?

To diagnose bipolar disorder, a doctor performs a physical exam, asks about your symptoms, and recommends blood testing to determine if another condition, such as hypothyroidism, is causing your symptoms. If the doctor does not find an underlying cause of your symptoms, he or she performs a psychological evaluation.

How do parents with bipolar get along?

How to be there for someone living with bipolar disorder

  1. Don't back down. ...
  2. Remember, they're not necessarily angry at you. ...
  3. Engage positively. ...
  4. Look for a community of support. ...
  5. Help them stick to treatment.

What is the main cause of bipolar disorder?

Genes. Bipolar disorder often runs in families, and research suggests that this is mostly explained by heredity—people with certain genes are more likely to develop bipolar disorder than others. Many genes are involved, and no one gene can cause the disorder.

What should you not say to someone with bipolar?

It also covers some of the things you should avoid saying to avoid causing hurt and frustration.

  • Overview of Bipolar Disorder.
  • "You're Just Overreacting Again"
  • "Anything That Doesn't Kill You Makes You Stronger"
  • "Everybody Has Mood Swings Sometimes"
  • "Everyone Is a Little Bipolar Sometimes"
  • "You Are Psycho"

What happens to untreated bipolar?

When left untreated, the symptoms of Bipolar Disorder will often increase in severity and may lead to suicide; there is a high suicide rate for people with the disorder. When treated, it's possible to control the symptoms of Bipolar Disorder and enjoy a more stable and fulfilling life.

What is the life expectancy of a person with bipolar disorder?

The authors found that the pooled life expectancy for patients with bipolar disorder, after removal of 1 outlier study, was 67.4 years (95% CI 65.2-69.7), with no evidence of publication bias. Life expectancy was significantly shorter in men (64.6) compared to women (70.5).

Can bipolar turn into schizophrenia?

While bipolar disorder cannot develop into schizophrenia, it's possible to experience symptoms of both. Before you consult a mental health professional, here are a few things you should know about the two conditions.

When does bipolar develop in females?

Bipolar disorder (BD) is a chronic condition with an average age of onset of 21 years. Although sex difference in age of onset has not been consistently observed, women appear over-represented in later-onset illness (45–49 years).

What are the 5 types of bipolar disorder?

Bipolar disorder is a mood disorder, and the Diagnostic and Statistical Manual of Mental Disorders currently lists five types: bipolar I, bipolar II, cyclothymic disorder, other specified bipolar and related disorders, and unspecified bipolar and related disorders.

What is a person with bipolar like?

People with bipolar experience both episodes of severe depression, and episodes of mania – overwhelming joy, excitement or happiness, huge energy, a reduced need for sleep, and reduced inhibitions. The experience of bipolar is uniquely personal. No two people have exactly the same experience.

What do bipolar episodes look like?

Bipolar disorder can cause your mood to swing from an extreme high to an extreme low. Manic symptoms can include increased energy, excitement, impulsive behaviour, and agitation. Depressive symptoms can include lack of energy, feeling worthless, low self-esteem and suicidal thoughts.

What happens if you are bipolar and don't take medication?

WEDNESDAY, May 19, 2021 (HealthDay News) -- Not taking prescribed medications can lead to relapse, hospitalization and increased risk of suicide for people with bipolar disorder, yet many who have this condition do not take their medicines as prescribed.

Do bipolar people know they are bipolar?

So no, not everyone who has bipolar disorder knows they have it. There are lots of reasons why someone with bipolar disorder might not realize it—or why they might deny having it even if they do.

Do bipolar know what they are doing?

Do people with bipolar disorder know what they're doing? Also yes. “Many people think that a person with bipolar disorder doesn't have any control over themselves or that they're unable to take care of themselves or function in society.

How long do bipolar episodes last?

Untreated, an episode of mania can last anywhere from a few days to several months. Most commonly, symptoms continue for a few weeks to a few months. Depression may follow shortly after, or not appear for weeks or months. Many people with bipolar I disorder experience long periods without symptoms in between episodes.