Current Discoveries and Future Implications of Eating Disorders

Summary & key facts

This narrative review summarizes what is known about eating disorders, focusing on anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorder (BED). The authors say these conditions often start in adolescence or early adulthood, are diagnosed more often in young women, and can harm physical, mental, and social health. The review reports numbers on how common the disorders are, key medical findings (for example, bone loss and higher death risk in AN), genetic and brain-related research, and gaps where more study is needed. The paper is based on a rapid scoping search of PubMed and PsycINFO for English studies from 2000–2023.

Key facts:

• The review says AN among women might occur in about 1–4% of people, and BN and BED might each occur in about 1–2% of people.
• Less than 50% of people with eating disorders experience complete remission; about 30% have lingering symptoms and about 20% develop a long-term (chronic) disorder.
• Anorexia nervosa may increase the risk of death by about five times or more, according to the review.
• About 40% of people with anorexia nervosa have reduced bone mineral density (BMD), and lifetime fracture risk in AN is about three times higher. (BMD is a measure of bone strength.)
• First-degree relatives of a person with anorexia nervosa are about 11 times more likely to develop AN than people without a family history, which shows a strong familial link.
• The review notes biological findings linked to AN in studies and animal models, including genetic signals (for example BDNF, NTRK2, NTRK3), changes in appetite hormones like leptin, and signs of brain-cell and immune changes such as reduced
• The authors report that people with mental disorders have close to twice the risk of metabolic diseases (like obesity, diabetes, and metabolic syndrome) compared with people without diagnosed mental disorders, citing a Lancet Psychiatry Com
• This paper is a narrative rapid scoping review. The authors searched PubMed and PsycINFO for studies in English from 2000–2023 and summarized findings; this means it maps existing research but is not a full systematic review of every study.

Abstract

Eating disorders (EDs) are characterized by severe disturbances in eating behaviors and can sometimes be fatal. Eating disorders are also associated with distressing thoughts and emotions. They can be severe conditions affecting physical, psychological, and social functions. Preoccupation with food, body weight, and shape may also play an important role in the regulation of eating disorders. Common eating disorders have three major types: anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorder (BED). In some cases, EDs can have serious consequences for an individual's physical and mental health. These disorders often develop during adolescence or early adulthood and affect both males and females, although they are more commonly diagnosed in young adult females. Treatment for EDs typically involves a combination of therapy, nutrition counseling, and medical care. In this narrative review, the authors summarized what is known of EDs and discussed the future directions that may be worth exploring in this emerging area.

Topics

Eating Disorders and Behaviors Obesity, Physical Activity, Diet Obsessive-Compulsive Spectrum Disorders

Categories

Clinical Psychology Psychology Social Sciences

Tags

Affect (linguistics) Anorexia nervosa Anxiety Binge eating Binge-eating disorder Bulimia nervosa Chemistry Clinical psychology Communication Distressing Eating disorders Medicine Narrative review Physical chemistry Psychiatry Psychology Psychotherapist