Janet Treasure on eating disorders and the quest for answers

Episode Summary

Executive Summary: The episode profiles psychiatrist Janet Treasure’s decades-long work transforming understanding and treatment of eating disorders. She argues they are biologically influenced, often missed because patients lack insight, and best addressed through early intervention, family-based care, and reduced stigma. The conversation covers genetics, developmental markers, treatment models, public attitudes, and promising new research including ketamine.

Main Topics: What eating disorders are and why they are hard to measure (Priority: 5/5): Treasure explains that eating disorders span anorexia, bulimia, and newer diagnoses, but prevalence is hard to count because conditions are not always named consistently and many sufferers do not recognise the illness or seek help. Stigma, visibility, and changing public perception (Priority: 5/5): The discussion traces how eating disorders moved from being hidden and shameful to more openly discussed, though stigma and misunderstanding still affect patients, families, and even clinicians. Biological, genetic, and developmental evidence (Priority: 5/5): Treasure describes family clustering, twin research, and later large genetic studies showing links to metabolism, growth, and brain-related traits, challenging the idea that eating disorders are purely psychological. Treatment innovation: cognitive interpersonal maintenance model (Priority: 4/5): She outlines a model that combines personality traits, cognitive style, emotional sensitivity, and starvation effects, and explains how motivational interviewing and parent training can support recovery. Severity, service gaps, and guideline implementation (Priority: 4/5): Despite new national guidelines and rising hospital admissions, Treasure says training and dissemination remain inadequate, and many cases are still poorly managed in routine medical settings. Current research: ketamine and future therapies (Priority: 4/5): Treasure is investigating whether ketamine, known for effects on rigidity and compulsivity, may help anorexia treatment, alongside animal-model work suggesting a biologically plausible pathway. Advice for clinicians and researchers (Priority: 3/5): She emphasizes the rewards of collaborative work with patients and families, and says future advances will require better second-line treatments and more intensive support delivered at home.

Key Arguments: Eating disorders are difficult to count accurately because many patients do not recognise they are ill, do not disclose symptoms, or never reach medical services. The stigma around eating disorders has decreased, but public and professional misunderstanding still limits detection and treatment. Evidence from twins and family patterns suggests a substantial genetic component, especially for anorexia nervosa. Anorexia and bulimia may share some traits but also show opposite developmental and biological patterns, indicating heterogeneity within eating disorders. Starvation itself worsens brain function and identity formation during adolescence, making recovery harder and reinforcing the disorder. Effective care for anorexia must include families, because patients often resist change and motivational interviewing helps reduce confrontation. Current systems still rely too heavily on repeated hospital admissions rather than sustainable community- or home-based approaches. New biological treatments, including ketamine, may help target compulsivity and rigidity that sustain anorexia. Eating disorders commonly co-occur with other conditions such as diabetes, autism spectrum conditions, and OCD, suggesting broader vulnerabilities and overlaps.

Data Points: Adult treatment rate: 20% - In a house-to-house survey of adults with eating disorders, only one-fifth had been to doctors for treatment. Increase in hospital admissions for eating disorders: 84% - Royal College of Psychiatrists figure cited for the last five years. Identical twins both affected: about 80% - Treasure’s twin study found concordance for eating disorders among identical twins. Non-identical twins both affected: about 20% - Comparison group in the twin study showed much lower concordance. Brain shrinkage in anorexia nervosa: 6% - Treasure cited starvation-related brain loss in anorexia, greater than most psychiatric disorders except dementia. Schizophrenia-related brain change comparison: 2% to 4% - Used as a comparator to show the severity of brain effects in anorexia. Year bulimia nervosa named: 1979 - Treasure noted that bulimia was only formally named in 1979. Year newer eating disorders named: 2015 - Treasure mentioned some newer diagnostic categories only being named in 2015. Year of Royal College guideline (MEAD): 2022 - National Medical Emergencies and Eating Disorders Guidelines were launched to improve medical staff guidance. Year of major international genetic study: 2019 - A large cohort study published genetic findings on anorexia involving thousands of patients.

Pivotal Quotes: "the old model was all about privacy and confidentiality, and we need to move on from that" — Janet Treasure: On reducing stigma and encouraging openness about eating disorders. "the brain shrinks by 6% in anorexia nervosa, which is much higher than any other psychiatric disorder other than dementia" — Janet Treasure: On the biological consequences of starvation and why recovery is difficult. "I think that that's what we've been doing and we need other approaches" — Janet Treasure: On the field’s reliance on repeated hospital admissions and the need for new treatments.

Implications: The episode argues for earlier recognition, stronger family-based care, better clinician training, and more biologically informed research. It suggests eating disorders should be treated as serious brain-body illnesses, not lifestyle choices, with future therapies likely combining psychological and medical approaches.