Obesity Risk Factor
Stress promotes weight gain in certain rats on medium-fat diet
Published in Obesity and Diabetes Week, October 27th, 2003
"To assess the interaction between stress and energy homeostasis, we immobilized male Sprague-Dawley rats prone to diet-induced obesity (DIO) or diet resistance (DR) once for 20 minutes and then fed them either low-fat (4.5%) chow or a medium-fat (31%), high-energy (HE) diet for nine days. Stressed, chow-fed DIO rats gained less, while stressed DIO rats on HE diet gained more body weight and had higher feed efficiency and plasma leptin levels than unstressed controls," investigators in the United States report.
"Neither stress nor diet affected DR body weight...
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