New global perspectives on eating disorders

Genealogies and Anthropologies of Global Mental Health

Within the proliferation of studies identified with global mental health, anthropologists rarely take global mental health itself as their object of inquiry. The papers in this special issue were selected specifically to problematize global mental health. To contextualize them, this introduction critically weighs three possible genealogies through which the emergence of global health can be explored: (1) as a divergent thread in the qualitative turn of global health away from earlier international health and development; (2) as the product of networks and social movements; and (3) as a diagnostically- and metrics-driven psychiatric imperialism, reinforced by pharmaceutical markets. Each paper tackles a different component of the assemblage of global mental health: knowledge production and circulation, global mental health principles enacted in situ, and subaltern modalities of healing through which global mental health can be questioned. Pluralizing anthropology, the articles include research sites in meeting rooms, universities, research laboratories, clinics, healers and health screening camps, households, and the public spaces of everyday life, in India, Ghana, Brazil, Senegal, South Africa, Kosovo and Palestine, as well as in US and European institutions that constitute nodes in the global network through which scientific knowledge and certain models of mental health circulate.

Neural responses to kindness and malevolence differ in illness and recovery in women with anorexia nervosa

In anorexia nervosa, problems with social relationships contribute to illness, and improvements in social support are associated with recovery. Using the multiround trust game and 3T MRI, we compare neural responses in a social relationship in three groups of women: women with anorexia nervosa, women in long-term weight recovery from anorexia nervosa, and healthy comparison women. Surrogate markers related to social signals in the game were computed each round to assess whether the relationship was improving (benevolence) or deteriorating (malevolence) for each subject. Compared with healthy women, neural responses to benevolence were diminished in the precuneus and right angular gyrus in both currently-ill and weight-recovered subjects with anorexia, but neural responses to malevolence differed in the left fusiform only in currently-ill subjects. Next, using a whole-brain regression, we identified an office assessment, the positive personalizing bias, that was inversely correlated with neural activity in the occipital lobe, the precuneus and posterior cingulate, the bilateral temporoparietal junctions, and dorsal anterior cingulate, during benevolence for all groups of subjects. The positive personalizing bias is a self-report measure that assesses the degree with which a person attributes positive experiences to other people. These data suggest that problems in perceiving kindness may be a consistent trait related to the development of anorexia nervosa, whereas recognizing malevolence may be related to recovery. Future work on social brain function, in both healthy and psychiatric populations, should consider positive personalizing biases as a possible marker of neural differences related to kindness perception.

Severity of eating disorder symptoms related to oxytocin receptor polymorphisms in anorexia nervosa

Oxytocin is a peptide hormone important for social behavior and differences in psychological traits have been associated with variants of the oxytocin receptor gene in healthy people. We examined whether single nucleotide polymorphisms (SNPs) of the oxytocin receptor gene (OXTR) correlated with clinical symptoms in women with anorexia nervosa, bulimia nervosa, and healthy comparison (HC) women. Subjects completed clinical assessments and provided DNA for analysis. Subjects were divided into four groups: HC, subjects currently with anorexia nervosa (AN-C), subjects with a history of anorexia nervosa but in long-term weight recovery (AN-WR), and subjects with bulimia nervosa (BN). Five SNPs of the oxytocin receptor were examined. Minor allele carriers showed greater severity in most of the psychiatric symptoms. Importantly, the combination of having had anorexia and carrying either of the A alleles for two SNPS in the OXTR gene (rs53576, rs2254298) was associated with increased severity specifically for ED symptoms including cognitions and behaviors associated both with eating and appearance. A review of psychosocial data related to the OXTR polymorphisms examined is included in the discussion. OXTR polymorphisms may be a useful intermediate endophenotype to consider in the treatment of patients with anorexia nervosa.

The myth of Chinese Barbies: eating disorders in China including Hong Kong

Much of the literature on eating disorders deals with Western subjects. Although the majority of those seen in clinical settings are Caucasians, reports from Asia suggest that anorexia nervosa and bulimia nervosa do occur in the Chinese, sparking debate as to whether or not it is the result of Westernization. This project begins with a review of the current literature on eating disorders in Chinese populations and the role of culture as a mediating factor. A psychodynamic conceptualization and the potential role of traumatic experiences are explored in the emergence of pathological eating habits. Research suggests that applying Western models for Chinese subjects with eating disorders may not always be appropriate.