You follow a diet or routine that lets you lose a lot of weight quickly which leads to loss of not just body fat but also muscle. This also leads to a drop in your body's metabolic rate. Soon enough you get back to your old eating habits and lifestyle.
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We're aware of a lot of side-effects of this kind of dieting but there's one we can definitely rule out. According to a study that appeared online in the American Journal of Epidemiology, repeated loss and regain of weight due to dieting may not put you at increased risk of contracting cancer. Researchers found that weight cycling, which is basically loss and regain of weight is not associated with the risk of cancer in men or women.
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The new study suggests that people trying to lose weight should be encouraged to do so even though they may regain it. Previous studies in animals and humans had suggested that weight cycling may affect biological processes that could lead to cancer. "This study, to our knowledge the largest and most comprehensive to date on the issue, should be reassuring," said lead researcher Victoria Stevens, strategic director, laboratory services, American Cancer Society.(The Weirdest Diet Trends for 2015)
"Our findings suggest that overweight and obese individuals should not let fears about their ability to maintain weight loss keep them from trying to lose weight in the first place," Stevens noted. The researchers examined weight cycling and cancer among more than 132,000 men and women enrolled in a study.
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The participants were men and women ages 50 to 74. More than 25,000 participants developed cancer during 17 years of study, but the researchers found no link between weight cycling and cancer risk.