Good news for Yo-Yo dieters! A new study by researchers at Fred Hutchinson Cancer Research Center, published online in the journal Metabolism, appears to show that a history of yo-yo dieting does not negatively affect metabolism or the ability to lose weight long term.
“A history of unsuccessful weight loss should not dissuade an individual from future attempts to shed pounds or diminish the role of a healthy diet and regular physical activity in successful weight management,” said the study’s senior author Anne McTiernan, in a statement.
According to NHS figures, nearly a quarter of adults in England are obese, while just under a third of women, 32% and 42% of men are overweight. In American, two-thirds of the US population is currently overweight or obese.
The analysis aimed to determine whether women with a history of moderate or severe weight cycling were at a disadvantage compared to non-weight-cyclers when it came to losing weight.
Although severe weight cyclers were, on average, nearly 20 pounds heavier than non-cyclers at the start of the study, at the end of the study the researchers found no significant differences between those who yo-yo dieted and those who didn’t with regard to the ability to successfully participate in diet and/or exercise programs.
The cyclers also did not differ from the non-cyclers with regard to the impact of diet or diet-plus-exercise on weight loss, percentage of body fat and lean muscle mass gained or lost
Other physiological factors such as blood pressure, insulin sensitivity, and blood concentrations of hormones such as leptin (which helps make one feel full) and adiponectin (which helps regulate glucose levels) also did not differ significantly among those whose weight fluctuated and those whose did not.
“To our knowledge, no previous studies have examined the effect of prior weight cycling on the body composition, metabolic and hormonal changes induced by a comprehensive lifestyle intervention in free-living women,” the authors wrote.
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What are you eating this summer? The happy healthcare host, Mr. Divabetic talks to everyday people about their healthy appetites at Independence Hall in Philadelphia, PA.
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