Nothing causes it. It is just simply there, and many people think it is a personality disorder. But is actually an offical mental illness with a diagnosis. People with BiPolar have something different about there brain(don't know what it is) which makes them feel and behave the way they do. and in some serious cases you might even be able to see the difference with there brain in a brain scan.
My BBC
One can find information on what causes bipolar disorder in humans by using websites such as Wikipedia or NIHM that tells you everything you need to know about bipolar disorder and how it is caused in humans.
Bipolar disorder is a mood disorder which causes unusual and dramatic shifts in a persons behavior. A bipolar attack is a period of time in which the symptoms are most unmanageable.
There are many causes for depression and bipolar disorder. One can develop these symptoms due to stress, life changes, diet and lifestyle habits, and injury or illness.
We do not know at this time. Nothing is known for certain about any of its possible causes.
IGBT and BJT are bipolar devices as the name suggest. Meaning of bipolar device both electrons and holes leads to current unlike FET where either electron or hole causes current.
Doctors think that bipolar disorder is caused by stress. Others believe that it's a mental illness that you can treat with medicine.
unknown, its probably not a single gene but instead many
Bipolar disorder affects men and women equally and usually appears between the ages of 15 and 25. The exact cause is unknown, but it occurs more often in relatives of people with bipolar disorder.
The moon has no effect on which mood a person is in.
Bipolar Disorder is characterized by heavy mood swings that occur randomly. The exact cause of bipolar disorder is unknown but there seem to be some factors that help trigger bipolar episodes. Some of these causes include differences in neurotransmitters, biological parts, hormones or inherited traits. Also, stress and traumatic events may play a large role in developing bipolar disorder.
A 2003 study found that schizophrenia and bipolar disorder could have similar genetic causes that arise from certain problems with genes associated with myelin development in the central nervous system.
The causes of bipolar disorder have not yet been precisely determined; however, genetics seem to play a large role. 80-90% of people diagnosed with bipolar disorder have a family history of either bipolar or major depression. However, this does NOT necessarily mean that someone with such a family history will inherit the genetic predisposition of the disease, or if they do, it will eventually develop into symptoms. The inheritance of bipolar disorder is not simple - it involves many genes, some of which are still being discovered and researched.