Chronotype and Body Composition in Bipolar Disorder
- 1 January 2009
- journal article
- Published by Taylor & Francis Ltd in Chronobiology International
- Vol. 26 (4), 780-788
- https://doi.org/10.1080/07420520902929060
Abstract
We explored whether obesity in patients with bipolar disorder is associated with their chronotype. A group of 29 patients with bipolar I disorder, not currently experiencing an affective episode, were assessed for total body fat, mood symptoms, and self-reported circadian chronotype and sleep quality. Chronotype explained 19% of the variance in body fat, after age, sex, mood state, and sleep quality were accounted for. This association suggested that evening chronotype patients have a higher percentage of total body fat. Evening chronotype could be a proxy for as yet unknown specific causes of the high rate of obesity and obesity-related diseases in bipolar disorder.Keywords
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