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After Dieting, Hormone Changes May Fuel Weight Regain


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If this is not in the right area, please move. The subject is so central to many (including yours truly), I put it here for greater visibility.

After dieting, hormone changes may fuel weight regain


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By Amanda MacMillan, Health.com updated 5:27 PM EDT, Wed October 26, 2011 Posted Image "Maintenance of weight loss requires continued vigilance and conscious effort to resist hunger," lead researcher says.


  • Hunger-related hormones can remain at altered levels for at least a year
  • A drop in body fat percentage causes a decrease in the levels of certain hormones
  • Finding an appetite suppressant of this sort is the next logical step in research
Losing weight is hard, but keeping the pounds off can be even harder. By some estimates, as many as 80% of overweight people who manage to slim down noticeably after a diet gain some or all of the weight back within one year.


A shortage of willpower may not be the only reason for this rebound weight gain. According to a new study in the New England Journal of Medicine, hunger-related hormones disrupted by dieting and weight loss can remain at altered levels for at least a year, fueling a heartier-than-normal appetite and thwarting the best intentions of dieters.


"Maintaining weight loss may be more difficult than losing weight," says lead researcher Joseph Proietto, Ph.D., a professor of medicine at the University of Melbourne's Heidelberg Repatriation Hospital, in Victoria, Australia. "This may be due to biological changes rather than [a] voluntary return to old habits."


Health.com: Diet-busting foods you should never eat


Scientists have known for years that hormones found in the gut, pancreas, and fatty tissue strongly influence body weight and processes such as hunger and calorie burning. And the reverse is also true: A drop in body fat percentage, for instance, causes a decrease in the levels of certain hormones (such as leptin, which signals to your brain when you're full) and an increase in others (such as ghrelin, which stimulates hunger).


What wasn't so well known, until now, was whether these changes in hormone levels persist after an individual loses weight. To find out, Proietto and his colleagues put 50 overweight or obese men and women on a very low-calorie diet for 10 weeks, then tracked their hormone levels for one year. Read the rest




As always, LISTEN TO YOUR BODY! A proud supporter of the 10% (or slower) rule.


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Read my intro thread here, and check the about me section.  "No matter how cynical you get, it's almost impossible to keep up." Lily Tomlin



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