Abstract:
:Rumination about body weight/figure as well as food is common in patients with Anorexia Nervosa (AN) and may be a maintenance factor of the disorder. While rumination can generally be considered as a cognitive-affective process, food-related rumination may be driven primarily by a physiological response to undernutrition. In the current longitudinal study, we integrate ecological momentary assessment of rumination and affect and, as a biological marker of undernutrition, plasma leptin levels collected from 33 AN patients. At the very acute stage and again after short-term weight-restoration patients answered short questionnaires six times per day over two weeks. Analyses via hierarchical linear modelling confirmed that rumination is closely linked to affect in AN before and after weight-restoration. Rumination about food decreased during weight-restoration and was correlated with leptin levels. In contrast, rumination about body weight/figure was not linked to leptin, persisted after weight gain, and showed stronger connections with affect. This suggests that rumination about body weight/figure seems to be a cognitive-affective aspect of the disorder, but food-related rumination may need to be considered from a physiological perspective. It is possible that food-related ruminative thoughts reflect a physiological symptom induced by undernutrition, similar to well-described leptin-associated changes in physical activity.
journal_name
Behav Res Therjournal_title
Behaviour research and therapyauthors
Fürtjes S,Seidel M,King JA,Biemann R,Roessner V,Ehrlich Sdoi
10.1016/j.brat.2018.10.001subject
Has Abstractpub_date
2018-12-01 00:00:00pages
92-98eissn
0005-7967issn
1873-622Xpii
S0005-7967(18)30154-2journal_volume
111pub_type
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