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Contemporary views on the genetics of anorexia nervosa.

ABSTRACT: Anorexia nervosa (AN) is a serious mental illness characterized by severe dietary restriction that leads to high rates of morbidity, chronicity, and mortality. Unfortunately, effective treatment is lacking and few options are available. High rates of familial aggregation and significant heritability suggested that the complex etiology of AN is affected by both genetic and environmental factors. In this paper, we review studies that reported common and rare genetic variation that influence susceptibility of AN through candidate gene studies, genome-wide association studies, and sequencing-based studies. We also discuss gene expression, methylation, imaging genetics, and pharmacogenetics to demonstrate that these studies have collectively advanced our knowledge of how genetic variation contributes to AN susceptibility and clinical course. Lastly, we highlight the importance of gene by environment interactions (G×E) and share our enthusiasm for the use of nutritional genomic approaches to elucidate the interaction among nutrients, metabolic intermediates, and genetic variation in AN. A deeper understanding of how nutrition alters genome stability, how genetic variation influences uptake and metabolism of nutrients, and how response to food components affects disordered eating, will lead to personalized dietary interventions and effective nutraceutical and pharmacological treatments for AN.

SUBMITTER: Shih PA

PROVIDER: S-EPMC4801707 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature

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Contemporary views on the genetics of anorexia nervosa.

Shih Pei-an Betty PA Woodside D Blake DB

European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology 20160220 4

Anorexia nervosa (AN) is a serious mental illness characterized by severe dietary restriction that leads to high rates of morbidity, chronicity, and mortality. Unfortunately, effective treatment is lacking and few options are available. High rates of familial aggregation and significant heritability suggested that the complex etiology of AN is affected by both genetic and environmental factors. In this paper, we review studies that reported common and rare genetic variation that influence suscep ...[more]

PMID: 26944296

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Project description:ObjectivesRecovery from anorexia nervosa (AN) is difficult to define, and efforts to establish recovery criteria have led to several versions being proposed. Using the perspectives of people with histories of AN and therapists working in the field, we sought to explore the face validity of Khalsa et al (2017) as one of the most recent examples of proposed systematic recovery criteria.DesignWe interviewed 11 health service users (SUs) with histories of AN who had previously received treatment alongside 8 eating disorder therapists (EDTs), exploring their views on the proposed AN recovery criteria.MethodsData from verbal and written interviews were analysed thematically. Separate thematic analyses of SU and EDT interviews highlighted where concerns converged and diverged across participants.ResultsBoth groups saw some merits of having universally recognized recovery criteria, and the multidimensional approach was welcomed, but EDTs were uncomfortable with considering their use in therapy and SUs felt key components were missing around emotional coping and life quality. SUs disliked the prominence of body mass index (BMI) in the criteria, and all struggled with the proposed duration for recovery. Conceptually, the notion of recovery as an endpoint rather than a journey was contested.ConclusionsOur findings indicate disparities between academically derived recovery criteria and lived experiences and indicate perceived challenges in using such criteria in therapeutic settings. Including SUs and EDTs in the development of criteria may improve the likelihood of consolidating AN recovery criteria, but conceptual challenges remain.Practitioner pointsAN recovery is complex, and the use of research-based AN recovery criteria in therapeutic settings could have a detrimental effect on SUs' outcomes. EDTs should be aware of efforts to define AN recovery criteria. EDTs should engage with debates on defining AN recovery and seek to promote participation in such debates to SUs.

Dataset Information

Contemporary views on the genetics of anorexia nervosa.

Publications

Contemporary views on the genetics of anorexia nervosa.

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