title: Night eating status and influence on body weight, body image, hunger, and cortisol pre- and post- Roux-en-Y Gastric Bypass (RYGB) surgery.
abstract: Night Eating Syndrome is a common disorder in severely obese individuals and may be associated with hypothalamic pituitary adrenal (HPA) axis dysregulation. This study compared night eaters (NE) and comparably obese controls (C) pre- and post-Roux-en- Y Gastric Bypass surgery at 2 and 5 months, following an overnight fast on hormonal measures associated with HPA axis and related appetite and psychological measures. There were 24 (10 NE, 14 C) clinically severely obese participants (body mass index =47.0+/-8.4 SD). At pre-surgery baseline, afternoon fasting hunger ratings differed significantly and were lower for NE than for C (p=0.01). Eight of the participants (4 NE, 4C) returned for all 3 study visits. At 5 months post-surgery, NE and C did not differ in weight loss, reductions in waist circumference, insulin levels, and insulin resistance (homeostasis model assessment). However, NE as compared to C, did not improve in self ratings of body image (p<0.05), and had significant increases in fasting afternoon cortisol levels 5 months after surgery (p=0.01).
authors.affiliation: New York Obesity Research Center, Department of Medicine, St. Luke's-Roosevelt Hospital Center, Columbia University, College of Physicians and Surgeons, New York, NY 10025, USA. morrow1215@yahoo.com
authors.forename: J
authors.initials: J
authors.lastname: Morrow
authors.forename: M
authors.initials: M
authors.lastname: Gluck
authors.forename: M
authors.initials: M
authors.lastname: Lorence
authors.forename: L
authors.initials: L
authors.lastname: Flancbaum
authors.forename: A
authors.initials: A
authors.lastname: Geliebter
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D001828:Body Image; D001835:Body Weight; D004435:Eating; D005247:Feeding Behavior; D005260:Female; D015390:Gastric Bypass; D006801:Humans; D006815:Hunger; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000097:blood / Q000523:psychology / Q000601:surgery*; D012938:Social Perception; D011795:Surveys and Questionnaires
chemical_list: D015415:Biomarkers; D006854:Hydrocortisone