Many Overweight and Obese Teens Underestimate Their Weight

A survey of nearly 5,000 13- to 15-year-olds in the U.K. found that 40 percent of overweight and obese teens did not self-identify as “too heavy.” Cynthia Graber reports

Illustration of a Bohr atom model spinning around the words Science Quickly with various science and medicine related icons around the text

Join Our Community of Science Lovers!

Obesity increases your risk for heart disease and stroke, diabetes, and even forms of cancer. So it’s probably a good idea to get in the habit of eating right and exercising while you’re still young. But teens get mixed messages about what’s a healthy body weight. They’re bombarded with unrealistic images of ultraskinny celebrities and models, while also seeing media coverage of obesity that includes photos of those who are exceptionally obese.

So a group of researchers in the U.K. wanted to know, do British teens have an accurate sense of where they fall along the weight scale

They examined data from nearly 5,000 13- to 15-year-olds collected between 2005 and 2012 by what’s called the Health Survey for England. Of the group, nearly three-quarters were normal weight. Twenty percent were overweight, with seven percent obese. 


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


The survey included asked this question for that age group: “Given your age and height, would you say that you are about the right weight, too heavy, or too light?”

Despite the thin-celebrity-saturated culture, 83 percent of normal weight adolescents thought they were, in fact, a healthy weight. Not surprisingly, the data changed by gender, 11 percent of normal-weight girls thought they were too heavy, compared to just four percent of boys. 

But the bad news: nearly forty percent of the overweight and obese teens did not self-identify as “too heavy.” Overweight girls recognized the issue more than boys did—nearly half the boys did not think that they were too heavy. The study is in the International Journal of Obesity. [S. E. Jackson et al, Weight perceptions in a population sample of English adolescents: cause for celebration or concern?]

The researchers say the data on overweight teens, particularly boys, “may have implications for the future health and wellbeing of young people,” and that overweight teens are substantially more likely to become overweight adults. Recognizing that there’s a lack of awareness among some teens could be a first step toward a healthier future.

—Cynthia Graber

[The above text is a transcript of this podcast.]

Cynthia Graber is a print and radio journalist who covers science, technology, agriculture, and any other stories in the U.S. or abroad that catch her fancy. She's won a number of national awards for her radio documentaries, including the AAAS Kavli Science Journalism Award, and is the co-host of the food science podcast Gastropod. She was a Knight Science Journalism fellow at MIT.

More by Cynthia Graber

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe