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The potential of calibrated fMRI in the understanding of stress in eating disorders.

ABSTRACT: Eating disorders (ED), including Anorexia Nervosa (AN), Bulimia Nervosa (BN), and Binge Eating Disorder (BED), are medically dangerous psychiatric disorders of unknown etiology. Accumulating evidence supports a biopsychosocial model that includes genetic heritability, neurobiological vulnerability, and psychosocial factors, such as stress, in the development and maintenance of ED. Notably, stress hormones influence appetite and eating, and dysfunction of the physiological stress response has been implicated in ED pathophysiology. Stress signals also appear associated with food reward neurocircuitry response in ED, providing a possible mechanism for the role of stress in appetite dysregulation. This paper provides a review of some of the interacting psychological, behavioral, physiological, and neurobiological mechanisms involved in the stress response among individuals with ED, and discusses novel neuroimaging techniques to address potential physiological confounds of studying neural correlates of stress in ED, such as calibrated fMRI.

SUBMITTER: Wierenga CE

PROVIDER: S-EPMC6234260 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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The potential of calibrated fMRI in the understanding of stress in eating disorders.

Wierenga Christina E CE Lavender Jason M JM Hays Chelsea C CC

Neurobiology of stress 20180818

Eating disorders (ED), including Anorexia Nervosa (AN), Bulimia Nervosa (BN), and Binge Eating Disorder (BED), are medically dangerous psychiatric disorders of unknown etiology. Accumulating evidence supports a biopsychosocial model that includes genetic heritability, neurobiological vulnerability, and psychosocial factors, such as stress, in the development and maintenance of ED. Notably, stress hormones influence appetite and eating, and dysfunction of the physiological stress response has bee ...[more]

PMID: 30450374

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Project description:BackgroundEating disorders (EDs) affect 1.25 million people in the UK. Evidence suggests the public display stigma and poor mental health literacy (MHL) towards EDs. There is a high prevalence of EDs in university populations, so it is important to determine the MHL of this at-risk group. Qualitative research exploring the MHL of this population is incomplete.ObjectiveExplore university students' beliefs and opinions of EDs, their knowledge of symptoms, treatment and help sources and how these are influenced by biological sex.DesignA qualitative study, using semistructured interviews analysed using inductive thematic analysis.SettingThe University of Birmingham.ParticipantsSeven female and seven male University of Birmingham students.ResultsAnalysis revealed six themes, each with subthemes: ED characteristics, causes, body image, seeking help, stigma and awareness. Students displayed poor awareness towards ED signs and symptoms, causes and help sources. Students were not stigmatising towards EDs, but many perceived them as a female problem and believed society to be stigmatising. Many referenced informal sources of information such as social media and expressed a desire for ED teaching. Sex did not have a significant influence on knowledge or opinions of EDs in this study; however, there were some differences, for example, some males were more likely to see EDs as a weakness and to perceive themselves as having low levels of knowledge.ConclusionsUniversity students show broad awareness of EDs; however, knowledge of certain aspects of ED-MHL including help sources and symptom recognition was lacking. Although students were not stigmatising of EDs themselves, many perceived high levels of public stigma. This, alongside poor knowledge, may delay help-seeking. Campaigns educating students and the public about EDs would aid earlier diagnosis, improving long-term outcomes. Further research into awareness and knowledge in other populations would be beneficial.

Dataset Information

The potential of calibrated fMRI in the understanding of stress in eating disorders.

Publications

The potential of calibrated fMRI in the understanding of stress in eating disorders.

Similar Datasets

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