Metabolic dysfunction in anorexia nervosa

Leonie Heilbronn, Kerry Lee Milner, Adamandia Kriketos, Janice Russell, Lesley V. Campbell

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Context: Anorexia nervosa (AN) is an eating disorder characterized by self-induced energy deficit and low body weight with major consequences for most organ systems and a tendency towards self-perpetuation. Objectives: To compare metabolic responses to glucose and exercise in women hospitalized with AN (n = 10) before and after 6-weeks weight gain program and in lean healthy weight women (BMI < 22 kg/m2) (n = 7). Main outcomes: Weight, body composition, indirect calorimetry, and response of serum insulin, glucose, adiponectin and leptin to oral glucose (75 g) and to 30-min of cycling at 50 rpm. Results: Patients with AN had similar lean mass to controls, but had significantly less body fat. Adiponectin was 43% higher (p < 0.01) and leptin 47% lower in AN subjects versus controls (p = 0.04). In response to moderate exercise, fasting glucose increased in AN (p < 0.05), but was unchanged in controls. After glucose ingestion, a trend towards a greater increase in diet-induced thermogenesis was also observed in patients with AN (p = 0.07). Despite a further 6 weeks as in patients, weight was not significantly changed in AN. Similarly, glucose, insulin, leptin or adiponectin were not altered. Conclusions: AN patients appear metabolically healthy under resting conditions, but their responses to physiological stressors differed from those of controls. Potential impediments to weight gain should be further investigated to define mechanisms with a view to improving the effectiveness of nutritional management.

Original languageEnglish
Pages (from-to)139-146
Number of pages8
JournalObesity Research and Clinical Practice
Volume1
Issue number2
DOIs
Publication statusPublished or Issued - May 2007
Externally publishedYes

Keywords

  • Anorexia nervosa
  • Body composition
  • Glucose metabolism
  • Lipid metabolism

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

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