Yo Yo Dieting has no effect on long-term weight loss: Study reveals

A new study reveals that yo yo dieting does not affect long-term weight loss as widely believed published by CTVNews.ca 19th August 2012 by Andrea Janus

Dieters who have trouble sticking with a weight-loss plan take heart: a new study suggests that so-called yo-yo dieting appears to have little effect on the ability to lose weight over the long term.

Experts believe that repeated cycles of weight loss and gain, which is also known as weight cycling, affects anywhere between 10 and 40 per cent of the population in Western countries.

But it has long been up for debate whether that pattern has a negative impact on metabolism and the long-term ability to shed pounds.

The new study was conducted by researchers at the Fred Hutchinson Cancer Research Center in Seattle. They culled data from 439 women who were classified as overweight or obese, sedentary, and between the ages of 50 and 75.

Of the participants, 18 per cent met the criteria for severe weight cycling (they reported losing 20 or more pounds on three or more occasions) while 24 per cent met the criteria for moderate weight cycling (losing 10 or more pounds on three or more occasions).

All participants had been randomly assigned to one of four groups for a year-long weight-loss program designed to help them shed 10 per cent of their starting weight: reduced-calorie diet only, exercise only, reduced-calorie diet plus exercise, and a control group that included neither diet nor exercise.

After the year, the subjects in the diet-only and diet and exercise groups met the weight-loss goal. And when the researchers compared the weight cyclers to the non-cyclers, they found no difference between the two groups in terms of weight loss, body-fat percentage and lean muscle mass gained or lost.

They also found that the cyclers and non-cyclers were equally successful at sticking with the year-long program. And health markers such as blood pressure and insulin sensitivity were not significantly different between the two groups.

The study is published in the journal Metabolism.

The findings, according to senior study author Dr. Anne McTiernan, show for the first time that,”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.”

McTiernan notes that being overweight or obese raises the risk for a number of cancers, as well as heart disease and diabetes, offering further reason to not let poor weight-loss outcomes influence lifestyle choices in the future.

“We know there’s an association between obesity, sedentary behaviour and increased risk of certain cancers,” McTiernan said, noting that the World Health Organization estimates that between one-quarter and one third of all cancers could be prevented with physical activity and maintaining a healthy weight.

As the study reveals you don’t need worry about long-term effects if you win back your weight you loosed  from a diet. Exercise daily and eat the right food and especially don’t give up…

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Posted by on Aug 20 2012. Filed under Diet. You can follow any responses to this entry through the RSS 2.0. Both comments and pings are currently closed.

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