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that America has a weight problem can not be denied, but the social perception that obese people simply can not lose weight is not true, a new study.
According to the researchers of the Beth Israel Deaconess Medical Center and Harvard Medical School in Boston, obese Americans are trying to lose weight - and many are successful. The researchers studied data for 4021 obese people age 20 and older who participated in the National Survey of Health and Nutrition Examination of government. Between 2001 and 2006, approximately 63% of the participants tried to lose weight, and 40% lighter - lose at least 5% of their body weight. Twenty percent of participants lost 10% of their body weight or more.
"I am surprised by the number of people in our study had success," said lead researcher Dr. Jacinda Nicklas, a clinical research fellow at Beth Israel Deaconess Medical Center and Harvard Medical School. " We feel that this is really difficult for obese people to lose weight, but no, they lose weight. Although it is a modest amount, you do not have to be thin to affect the good health. "
clinical guidelines recommend a 10% loss of body weight for obese adults to improve their health, but according to Nicklas, studies have shown that even a body weight loss of 5% has advantages measurable health.
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How successful losers do? Here's what went wrong: using fashionable techniques such as liquid cleanses 30 days, taking diet pills without prescription and eating "diet" foods. Obese Americans who reported losing weight were more likely to steer clear of the so-called latest and dieting and adopt the conventional technique to eat less and exercise more instead, which said "a lot of drinking water" and "eat less fat," for example.
the most popular strategies eat less, exercise more, eat less fat and switch to foods calorie drop. people who have used weight loss of business programs and prescription weight loss pills has also seen success, but only a small proportion of study participants used them. Meanwhile, the liquid diets, diet pills without prescription and popular diets showed no association with weight loss.
"It is reassuring that patients use less costly strategies that have been proven effective and strategies more "proven", "said study author Dr. Christina Wee, co-director of research at the Division of General Medicine and primary care at Beth Israel Medical Center. "I think what's also nice is that when they try, they usually lose weight."
Participants who lost more (at least 10% of their body weight) were more likely to have come to a commercial weight -loss program - they tend to keep dieters accountable -. and were less likely to report diet foods
"If you look at people who are trying to lose weight, using food and dietary products was actually detrimental to weight loss. We call the effect that "health halo," says Nicklas. "When a food is labeled as a food or low-fat diet, people think that eating it will make you lose weight. So they end up eating much more than that they should "
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The researchers found that prescription weight loss pills were most strongly associated with weight loss, but only a small number of participants reported their use. Wee speculates that doctors may hesitate when it comes to prescribing diet pills. "I think there is a reluctance on the part of health providers to prescribe them, and some are well justified. Some prescription pills have subsequently been deemed harmful. We also know from other studies that sometimes there is not much time for the weight of the board for the appointment. patients receive a lot of advice from weight loss elsewhere, and take it upon themselves to lose weight. They can be less engaged with their doctor in this regard. "
of course, dropping pounds is only half the battle. Keep out long-term tension is often the hardest part, which is why the research team calls for further studies to identify the obstacles to maintaining weight loss. "We have not taught people how to maintain," says Nicklas. "That's the biggest challenge. There is a problem with weight maintenance, and we need to better educate people on how to do it. "
The study was published in American Journal of Preventive Medicine .
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