The British Journal of Psychiatry 149: 751-755 (1986)
© 1986 The Royal College of Psychiatrists
The effects of weight change on the dexamethasone suppression test in depressed and anorexic patients
I Schweitzer, KP Maguire, JW Tiller, AH Gee, LC Harrison and BM Davies
Prior studies on weight change and hypothalamic-pituitary-adrenal (HPA)
axis functioning are reviewed. Data on 58 depressed and eight anorexic
patients is presented. No significant difference in the frequency of
cortisol non-suppression in the dexamethasone suppression test (DST) was
found between depressed patients with a history of weight loss and those
without, nor between depressed patients who lost weight during their first
week in hospital and those who did not. Mean weight loss of suppressors did
not significantly differ from that of non-suppressors. Of 12 patients whose
DST normalised during their stay in hospital, only four gained weight. Five
anorexics who were non-suppressors were less than 70% of their ideal body
weight (IBW), while three suppressor anorexics were greater than or equal
to 70% IBW. These results indicate that mild to moderate weight change is
not a significant influence on DST response in depression.