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Yo-Yo Dieters Should Not Give Up On Healthy Diet, Physical Activity

August 14, 2012: 12:00 AM EST
Constantly shedding and regaining pounds – a common phenomenon known as weight cycling or “yo-yo dieting” – does not adversely affect metabolism or reduce the ability to lose weight over the long term, a U.S. study has found. Researchers analyzed data from 439 overweight-to-obese  sedentary women, ages 50 to 75, who were assigned to diet-exercise plans or no plan at all. Eighteen percent were severe weight cyclers who had lost 20 or more pounds at least three times; 24 percent were moderate weight cyclers. Reason for optimism: all of the dieters-exercisers lost weight, and cyclers did not differ from the non-cyclers in the amount of weight loss.
Caitlin Mason et al., "History of weight cycling does not impede future weight loss or metabolic improvements in postmenopausal women", Metabolism, August 14, 2012, © Elsevier Inc.
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