Family physicians were curious to know if their own patients might believe in myths about losing weight. Maybe in the few short years since the New England Journal of Medicine (NEJM) paper was published, this information has permeated through popular media, and corrected itself.
To figure this out, they conducted a study of over 300 people. People who participated in the survey had an average age of 37, were mostly female (76 per cent), had at least some college education (76 per cent), and were a mix of non-Hispanic black (38 per cent) and non-Hispanic white (47 per cent).
The grand majority of people surveyed still believed in these myths (myth 1: 85 per cent, myth 2: 94 per cent, myth 3: 85 per cent, myth 4: 61 per cent). More interestingly, there were no differences in what people believed across gender, age, or educational levels. These myths were pervasive.
How can one expect people to lose weight if most do not know the basics of weight loss? The researchers didn’t need to go far before realising that these myths were still found in popular media. In some cases, physicians themselves may fall victim to these myths.
Of course, healthcare providers should only give evidence-based advice to patients about weight loss in order to optimise their chance of success. Studies have shown that when primary care doctors provide advice on weight loss, patients are more likely to attempt to change their behaviours related to weight. However, even giving better and more advice may not be enough.
The first step is to acknowledge that patients are likely influenced by the myths that are so easily found online and among the advice given by friends and family. This means patients must be particularly savvy consumers of health information and to seek out information from reputable sources.
This also means that educating and empowering overweight patients is only one part of the solution. Informing those — friends, family, and also the media — who influence overweight patients is also important if we want to change the trajectory of obesity in the U.S.
Weight loss myths have broad appeal
An article from 2013 in the NEJM identified common myths surrounding obesity from popular media and scientific literature. The authors defined myths as ideas that are commonly held, but go against scientific data. Could these myths be keeping us from treating obesity effectively? As family physicians who treat overweight patients every day, we believe they do.
Not only can these myths discourage people, they also provide misinformation that can prevent people from reaching their weight loss goals.
You might be surprised to hear some of these myths
Myth 1: Small changes in your diet or exercise will lead to large, long-term weight changes. Unfortunately, this is not true. In weight loss, two plus two may only equal three instead of four. Small changes simply do not add up since physiologically, your body tries to stay the same weight. This doesn’t mean that making small healthy choices don’t matter, because even small things you do to stay healthy matter. It just means you are not likely to meet your weight loss goals by just taking one less bite. It’s likely going to take bigger changes in your diet and exercise.
Myth 2: Setting realistic goals when you are trying to lose weight is important because otherwise you will feel frustrated and lose less weight. Patients often come in with ambitious goals for weight loss, and family physicians nearly always say — go for it (within safety and reason). There is no evidence that shooting for the stars leads to frustration. If anything, aiming for a larger goal may lead to better weight-loss outcomes.
Myth 3: Losing a lot of weight fast doesn’t keep weight off as well as losing a few pounds slowly. Again, studies have shown that losing a larger amount of weight fast in the beginning (maybe while you are super motivated) has been associated with lower weight in the long-term. There just isn’t evidence to go ‘slow and steady’ when it comes to weight loss.
Finally, to our favourite one
Myth 4: Having sex one time burns about as many calories as walking a mile. Sorry to disappoint, but for an average sexual encounter (lasting six minutes), an average man in his 30s burns just 20 calories. And as the NEJM articles further explains, this is just 14 more calories than sitting and watching TV. So if the thought went through your head that sex may be your exercise for the day, you should think again.
Americans spend $60 billion on weight loss products each year, trying everything from expensive meal replacement products to do-it-yourself programs on the latest cell phone apps. They gather weight loss advice, voluntarily or involuntarily, from news outlets, social media and just about everyone
The estimated annual health care costs related to obesity are over $210 billion, or nearly 21 per cent of annual medical spending in the United States.
Americans have known for 15 years that obesity is an epidemic; the surgeon general declared it so in 2001 despite intense efforts to prevent and treat obesity. However, studies published in the Journal of the American Medical Association showed that 35 per cent of men, 40 per cent of women, and 17 per cent of children and adolescents are obese. Even more worrisome, the rates continue to rise among women and adolescents.
In fact, experts predict that this generation of children may be the first in 200 years to have a shorter life expectancy than their parents, likely due to obesity.
So what is our society doing wrong? Clearly, what doctors and policy makers have been doing for the last 15 years to address this epidemic is not working...