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Mortality in eating disorders
1Academic Department of Psychiatry, Royal Free Hospital, London.
Insights
Patients with anorexia nervosa face a significantly higher mortality risk, with suicide being the leading cause. This elevated risk persists for years, especially for those with severe illness and repeated hospitalizations.
Area of Science:
- Psychiatry
- Clinical Medicine
- Public Health
Background:
- Eating disorders, including anorexia nervosa and bulimia nervosa, are serious mental health conditions.
- High mortality rates are a known complication of severe eating disorders.
Purpose of the Study:
- To calculate and compare crude and standardized mortality rates in patients with eating disorders.
- To identify causes of death and risk factors associated with increased mortality.
Main Methods:
- Analysis of mortality data for 460 consecutive eating disorder patients (1971-1981).
- Calculation of crude mortality rates.
- Standardization of mortality rates against a British reference population.
Main Results:
- Crude mortality rates were 3.3% for anorexia nervosa and 3.1% for bulimia nervosa.
- Standardized rates revealed a six-fold increase in mortality for anorexia nervosa patients.
- Suicide was the most common cause of death in anorexia nervosa, with high risk persisting for at least eight years.
- Lowest presenting weight and recurrent hospital admissions were associated with increased mortality.
Conclusions:
- Anorexia nervosa is associated with a substantially elevated mortality risk compared to the general population.
- Suicide is a primary cause of death, highlighting the need for long-term mental health support.
- Identifying high-risk individuals (low weight, frequent admissions) is crucial for targeted interventions.
Abstract:
Crude mortality rates and mortality rates standardized against a British reference population have been calculated for a group of 460 consecutive patients with eating disorders seen between 1971 and 1981 in a tertiary referral centre for eating disorders. Crude mortality rates were 3.3% and 3.1% in the anorexia nervosa and bulimia nervosa groups respectively. Standardized rates demonstrated a six-fold increase in mortality in the anorexia nervosa group. The most common cause of death in this group was found to be suicide, with the risk of death remaining high for at least eight years after initial assessment. Specific associations of increased mortality were: being in the lowest weight group at the time of presentation, and having recurrent hospital admissions for eating problems.