Scientists have long recognized that many psychiatric disorders tend to run in families, suggesting potential genetic roots. Such disorders include autism, attention deficit hyperactivity disorder (ADHD), bipolar disorder, major depression and schizophrenia.
One of the most highly genetically inherited psychiatric disorders is bipolar disorder which may affect as much as 1-4% of the population. Bipolar disorder is characterized by periods of depression followed by periods of abnormally elevated mood (mania/hypomania).
You might worry that you could develop or 'catch' the same illness as your ill parent – but you cannot catch a mental illness from anyone. People might say 'it runs in families' or talk about the genetics or genes causing the illness.
Heritability is probably 40-50%, and might be higher for severe depression. This could mean that in most cases of depression, around 50% of the cause is genetic, and around 50% is unrelated to genes (psychological or physical factors).
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.
Bipolar disorder can occur at any age, although it often develops between the ages of 15 and 19 and rarely develops after 40. Men and women from all backgrounds are equally likely to develop bipolar disorder. The pattern of mood swings in bipolar disorder varies widely between people.
Research conducted and funded by the National Institute of Mental Health (NIMH) has found that many mental disorders are caused by a combination of biological, environmental, psychological, and genetic factors.
There's clear research showing that anxiety is influenced by genetics. In fact, experts noticed a family connection for anxiety even before they understood how DNA or genes worked. If you have a close relative with anxiety, your chance of developing it's about 2 to 6 times higher than if you don't.
The exact causes of schizophrenia are unknown. Research suggests a combination of physical, genetic, psychological and environmental factors can make a person more likely to develop the condition. Some people may be prone to schizophrenia, and a stressful or emotional life event might trigger a psychotic episode.
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.
Genetics. ADHD tends to run in families and, in most cases, it's thought the genes you inherit from your parents are a significant factor in developing the condition. Research shows that parents and siblings of someone with ADHD are more likely to have ADHD themselves.
Depression is known to run in families, suggesting that genetic factors contribute to the risk of developing this disease. However, research into the genetics of depression is in its early stages, and very little is known for certain about the genetic basis of the disease.
Genetic studies show a heritability rate of 30-67% for anxiety disorders. If a first degree relative of a child has an anxiety disorder, there is a chance that the child will also develop anxiety over the course of his or her lifetime.
GAD can be triggered by family or environmental stress. Chronic illness and disease can also trigger GAD.
Your genes and family history. Your life experiences, such as stress or a history of abuse, especially if they happen in childhood. Biological factors such as chemical imbalances in the brain.
Most mental disorders are thought to arise from a complex mix of genetic and environmental factors. Past studies have found evidence of shared genetic risk factors among different mental disorders.
Childhood trauma
Some experts believe that experiencing a lot of emotional distress as a child can cause bipolar disorder to develop. This could be because childhood trauma and distress can have a big effect on your ability to manage your emotions.
As much as you might love or care for the individual, if they are emotionally, mentally, or physically abusive, it is okay to step away from the situation. Some examples of emotional, mental, and physical abuse include: Emotional & Mental Abuse: Being dissatisfied, no matter how hard you try or how much you give.