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Psychosomatic Medicine, Vol 46, Issue 5 454-462, Copyright © 1984 by American Psychosomatic Society

ORIGINAL ARTICLES

Plasma cortisol and beta-endorphin immunoreactivity in human obesity

MR Cohen, D Pickar, RM Cohen, TN Wise and JN Cooper

The relationship of the endogenous opioid system and the hypothalamic-pituitary-adrenal axis to obesity was studied. Morning levels of plasma cortisol and beta-endorphin immunoreactivity in obese patients before diet treatment were found to be no different from those in matched family members of normal weight. In 32 untreated obese patients, no relationship between weight or body mass index (a measurement of obesity) and plasma levels of beta-endorphin immunoreactivity or cortisol was found. However, plasma cortisol levels were significantly correlated with obese patient ratings on the depression subscale of the General Health Questionnaire. Dexamethasone administration failed to suppress plasma beta-endorphin levels in untreated obese patients, but this finding has been reported in normal subjects in whom a similar assay methodology was used; it suppressed plasma cortisol levels in 29 of 32. The three patients resistant to suppression also suffered from benign essential hypertension. Plasma beta-endorphin immunoreactivity was unchanged, but cortisol levels significantly decreased as weight was lost on a 400-calorie/day modified protein fast. Patients who failed to complete the 6-month diet program had significantly increased plasma beta-endorphin levels compared to those who successfully completed the program.


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M. E. Gluck, A. Geliebter, J. Hung, and E. Yahav
Cortisol, Hunger, and Desire to Binge Eat Following a Cold Stress Test in Obese Women With Binge Eating Disorder
Psychosom Med, November 1, 2004; 66(6): 876 - 881.
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