Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Can thinking that you are fat make you fat?

09.08.2012
They're everywhere -- in magazines, on the Internet, on television—people with super-thin bodies who are presented as having the ideal body form. But despite the increasing pressure to be thin, more and more of us are overweight.
Now, researchers from the Norwegian University of Science and Technology (NTNU) have found that normal weight teens who perceive themselves as fat are more likely to grow up to be fat.

"Perceiving themselves as fat even though they are not may actually cause normal weight children to become overweight as adults," says Koenraad Cuypers, a researcher at the Norwegian University of Science and Technology.

Cuypers and his colleagues at the Department of Public Health and General Practice in NTNU's Faculty of Medicine have looked at data from the Nord-Trøndelag Health Study (HUNT) to examine the obesity problem from a new angle: Theirs is the first study to look at the relationship between perceived weights and actual weights in a longitudinal study of teenagers and young adults.

A perpetual struggle for the ideal body
There are likely many different, and complex, reasons that explain why thinking you are fat as a teen– even if you are not – may lead you to become fat when you are grown.

One explanation may be related to psychosocial stress, which can be associated with gaining weight around the waist. Under this scenario, the psychosocial stress related to having (or not having) an ideal body type, along with the perception of oneself as overweight, can result in weight gain.

"Another explanation may be that young people who see themselves as fat often change their eating habits by skipping meals, for example. Research has shown that dropping breakfast can lead to obesity," Cuypers says.

Additionally, following a diet that you cannot maintain over time will also be counterproductive, since the body strives to maintain the weight you had before you started the diet.

The researchers checked whether physical activity made a difference in the relationship between perceived and actual obesity. But they found that exercise could not compensate for the negative effect of feeling overweight at a young age.

Higher BMI, larger waist circumference
The health survey Young-HUNT1 was conducted from 1995-1997 and included 1196 normal weight teenagers of both sexes. Participants were later followed up in the Young-HUNT3 study, from 2006-2008, when they had grown to be between 24 and 30 years of age.

Half of the participants still had normal weights as adults. But among those who were overweight, the researchers found a clear difference:

The data showed that 59 per cent of the girls who had felt fat as a teen became overweight in adulthood, as measured using body mass index, or BMI. If waist circumference was used as the measure of obesity, then the percentage of teens who initially perceived themselves as fat and later became overweight as adults was 78 per cent.

In contrast, 31 per cent of the girls who did not consider themselves fat during adolescence were found in the follow-up study to be overweight as measured using BMI. That number was 55 per cent as measured by waist circumference.

Normal weight teens who rated themselves as fat in the initial HUNT study had a BMI in the follow-up HUNT study that was on average 0.88 higher than those who did not. They were also on average 3.46 cm larger as measured around the waist.

Similar studies have previously been conducted in normal weight adult men and women. These studies have also shown an increase in weight over time in those who perceived themselves as too fat.

Simple measures for normal weight
The study also shows that normal weight girls were more likely than boys to rate themselves as overweight: 22 per cent of girls and nine per cent of the boys saw themselves as fat in the first HUNT survey.

One explanation for this gender difference may be that the media's focus on looks increasingly targets girls rather than boys.

"Girls thus experience more psychosocial stress to achieve the ideal body," Cuypers says. "Society needs to move away from a focus on weight, and instead needs to emphasize healthy eating habits, such as eating regular and varied meals and eating breakfast. Good sleep habits are also an advantage. And by reducing the amount that teens are transported to and from school and recreational activities, teens might also be able to avoid getting a ‘commuter belly'," Cuypers adds.

These kinds of measures can improve overall health, and can also be a help for teens who are in fact overweight, but who believe their weight is normal.

Role models, not super models
Cuypers believes that the relationship between a perception of being overweight and the development of overweight is something the school system and society as a whole must address in order to reverse the trend and reduce societal problems associated with obesity.

"The weight norms for society must be changed so that young people have a more realistic view of what is normal. In school you should talk to kids about what are normal body shapes, and show that all bodies are beautiful as they are. And, last but not least: The media must cease to emphasize the super model body as the perfect ideal, because it is not." Cuypers says.

Cuypers' results have been published in the Journal of Obesity: http://www.hindawi.com/journals/jobes/2012/601872/

Koenraad Cuypers | EurekAlert!
Further information:
http://www.ntnu.no

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>