Related Experiment Video
Updated: Jul 19, 2026

Using the Activity-based Anorexia Rodent Model to Study the Neurobiological Basis of Anorexia Nervosa
Published on: October 22, 2015
Death from anorexia nervosa: age span and sex differences
P L Hewitt1, S Coren, G D Steel
1Department of Psychology, University of British Columbia, Vancouver, Canada.
Abstract:
The purpose of this study was to assess characteristics of individuals who died from anorexia nervosa by assessing the frequency with which anorexia nervosa is listed as a causal factor related to the death of individuals in the USA. Data from over 10 million death records (all National Center for Health Statistic registered deaths in the USA for 1986-90) were examined for mention of anorexia nervosa as a primary or contributing cause of death. Only 724 were found, which equals an average of 145 annual deaths, and a rate of 6.73 per 100,000 deaths. The age and sex distribution suggests two fatal forms of anorexia nervosa, an early-onset form comprising 89% women and a later form comprising 24% men. The findings suggest that the mortality risk from current anorexia nervosa may be lower than formerly supposed and that it is not confined to young adults and adolescents.
Related Concept Videos
Two-Way ANOVA
The two-way ANOVA analysis initially begins by stating the null hypothesis that there is an interaction effect between the two factors of a dataset. This effect can be visualized using line segments formed by joining the means for...
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Anorexia Nervosa
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
Bulimia Nervosa
Binge Eating Disorders

