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Bipolar Disorder Linked To Risk Of Early Death From Natural Causes

Date:
February 4, 2009
Source:
University of Washington
Summary:
People with bipolar disorder have a higher death rate from natural causes compared to people in the general population of the same age and gender but without mental illness.

Bipolar disorder appears to increase the risk of early death from medical illnesses, according to a literature review study published as the lead article this week in the journal Psychiatric Services.

The researchers comprehensively reviewed 17 studies involving more than 331,000 patients. Evidence suggested that people with bipolar disorder have a higher mortality from natural causes compared to people in the general population of similar age and gender but without mental illness. The various studies indicated that the risk was from 35 percent to 200 percent higher. The risk is the same for men and women. The most common conditions leading to premature death were heart disease, respiratory diseases, stroke, and endocrine problems such as diabetes.

"The review of data gathered from large population studies suggests that having bipolar disorder is similar to being a smoker in terms of increasing a person's risk of early death," said Dr. Wayne Katon, a University of Washington (UW) professor of psychiatry. He co-authored the study with third-year UW psychiatry resident Babak Roshanaei-Moghaddam. The article is titled, "Premature Mortality from General Medical Illnesses Among Persons with Bipolar Disorder: A Review." Katon is a noted researcher on the interplay between life-shortening medical conditions and mood disorders.

People with bipolar disorder tend to have manic phases and depressed phases in their lives. During mania, they might be too wound up to sleep, their thoughts might race, and they might have boundless energy. During depression, they might feel painfully sad, hopeless, and immobilized.

In the past, the higher premature death rate among people with bipolar disorder was attributed to a higher rate of suicide and accidents. More recently, Katon said, researchers are finding that, while rates of suicides and accidents are indeed greater among those with bipolar disorder compared to the general population, they only partly account for the higher premature death rate. Emerging evidence, Katon said, shows that the majority of early deaths among people with bipolar disorder come from medical conditions.

As psychiatric conditions such as bipolar disorder become more treatable, Katon said, "We're saving people from this illness and losing them to other medical illnesses."

The possible reasons for this higher risk of premature death are manifold. Many factors could be contributing to poor physical health among people with bipolar disorder, according to the published report. These include unhealthy diet, binge eating, lack of exercise, smoking, substance abuse, social deprivation, living alone, homelessness, lack of access to health services, biased attitudes of health professionals towards people with psychiatric illnesses, failure among psychiatrists to address their patient's medical problems, or delaying medical care because of the overriding need for psychiatric treatment.

Biological abnormalities associated with bipolar illness might also be shortening lives, Katon noted. The illness can stress the immune system and the hypothalamic-pituitary axis, a system that controls many body processes. Bipolar disorders also heighten the activity of the sympathetic nervous system, which sets off the fight-or-flight response to stress.

Katon also noted that some new antipsychotic medications used to successfully treat bipolar disorders are safer and more comfortable for the patient in some ways than previous medications, but can cause weight gain leading to obesity and other metabolic changes that predispose people to Type 2 diabetes. Some mood stabilizers, Katon added, also are associated with weight gain and metabolic disorders.

Katon mentioned new attempts to try to reduce premature death in people with bipolar disorder. These include providing psychiatrists and other mental health professionals with guidelines and training in monitoring their patients' basic physical health and teaching them how to advise their patients about smoking cessation, exercise and other preventive measures.

"Changes are also occurring in medical schools to teach new physicians in all specialties how to recognize psychiatric illnesses and to understand the serious health risks associated with mental illness," Katon said.

Increasingly, community mental health centers are adding primary-care physicians and nurse practitioners to the staff to see patients for medical conditions, he said. Medical specialty centers are also adding mental health professionals to diagnose and treat the depression, anxiety and other psychic distress that often accompany serious illnesses.

"Psychiatrists are now on the staff of a growing number of medical specialty clinics, such as centers for diabetes, heart disease and cancer, and at primary-care centers, such as family medicine practices," Katon said. "Mental health professionals are working side-by-side with providers who treat medical illnesses. New approaches to health care and wellness programs are being tested at a number of places to find effective models for preventing premature deaths associated with bipolar disorder and other mental illnesses."


Story Source:

The above story is based on materials provided by University of Washington. Note: Materials may be edited for content and length.


Cite This Page:

University of Washington. "Bipolar Disorder Linked To Risk Of Early Death From Natural Causes." ScienceDaily. ScienceDaily, 4 February 2009. <www.sciencedaily.com/releases/2009/02/090202103023.htm>.
University of Washington. (2009, February 4). Bipolar Disorder Linked To Risk Of Early Death From Natural Causes. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2009/02/090202103023.htm
University of Washington. "Bipolar Disorder Linked To Risk Of Early Death From Natural Causes." ScienceDaily. www.sciencedaily.com/releases/2009/02/090202103023.htm (accessed April 17, 2014).

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