Do make you obese for staying and working beside fast food shops?

Below is an interesting study on the impact of food choices based on the amount of fast food outlets in the study participants work and home environments. I certainly believe that there are factors which create obesegenic environments which include the ever increasing amount of fast food outlets, and anything we can do to decrease the amount of high fat/sugar options is a good thing. But equally, there are many people who live in the same environments who are not affected by their surroundings.

So what then makes one person make poor food choices when compared to another? I think we need to look deeper into what drives the behaviors and choices of people and how we can make changes at the behavioral level so that regardless of what environment they live in, they are able to make healthy, long term changes and choices.

Do make you obese for staying and working beside fast food shops?

It may seem like an obvious association: exposure to fast food restaurants and likelihood of obesity. But researchers whose study revealed these findings say the link shows evidence of a “dose-response relationship” and could have implications in the wake of the increasingly worrisome public health issue that is obesity.

Publishing their work on bmj the researchers, from the University of Cambridge in the UK, say people exposed to fast food establishments around their home, at work or during their commute are much more likely to consume such foods.

In the UK, consumption of food outside the home has risen by 29% during the past 10 years, the researchers say. They add that this could be contributing to rising numbers of overweight and obese individuals.

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According to the Centers for Disease Control and Prevention, between 2007 and 2010, adults in the US consumed an average of 11.3% of their total daily calories from fast food, a known contributor to weight gain.

The researchers say that though policies have focused more on this topic in the recent past, identifying the link between exposure to unhealthy foods, diet and body weight has been a challenge.

To investigate further, the team examined how exposure to fast food outlets in both home and non-home environments was linked with eating such food, body mass index (BMI) and the chances of being overweight or obese.

By using data from a population-based cohort study, called the Fenland Study, the researchers were able to assess adults between the ages of 29 and 62 who lived in Cambridge shire in 2011. In total, 5,442 participants took part in the study, all of whom worked outside the home.

Group most exposed to fast food had higher BMI

Along with including food shops in home and work neighborhoods, the researchers say their study incorporated fast food shops along commuting routes, which were fashioned according to how individuals traveled.

There are several factors associated with obesity risk that the analysis included, such as age, sex, household income, education, car ownership, energy intake, smoking status and physical activity. The team notes they objectively assessed physical activity through the Fenland Study by using heart rate sensors and accelerometers, which the participants wore.

Additionally, the researcher’s estimated daily intake of pizza, burgers, fried food and French fries as a marker of fast food after analyzing the food frequency questionnaires, and they calculated BMI from measured height and weight.

Overall, the study participants were exposed to 48% more fast food establishments at work, compared with at home, and the average total exposure level was 32 fast food shops.

After looking at exposure levels at work, home and during the commute, the researchers observed that more exposure resulted in higher fast food consumption. In the most exposed group of people, the average fast food consumption level was 5.7 g per day more than the least exposed group.

And when the team focused on BMI, they found that the group most exposed to fast food shops in all three environments combined had a BMI that was 1.21 greater than the group that was least exposed. Overall, the most exposed group was twice as likely to be obese, compared with the group that was least exposed.‘Causal link cannot be confirmed.’

Though their findings are significant, the researchers say this type of population study cannot confirm that there is a causal link between obesity and environment.

However, they say they found an “environmental contribution to the consumption of takeaway foods, and especially to BMI and the odds of being obese.”

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There were also some limitations to the study. For example, they used a 1-mile radius to represent home and work neighborhoods, but they add that neighborhood definitions vary from person to person or between work and home.

Additionally, they say fast foods can be bought from other types of shops – for example, cafeterias at work – and they did not control for these types of food sources.

Finally, the team notes that they did not know how long the participants had been exposed to the environments used in the study, so this adds a further limitation to the study. Still, the researchers say their findings suggest that policies aimed at improving diets by limiting fast food availability would likely be most effective if centered on workplaces.

Fast facts about fast food

In recent Survey, adults in the US consumed 11.3% of their daily calories from fast food. The percentage of calories consumed from fast food decreases with age, as adults over 60 consume the lowest percentage. Obese adults consume the highest percentage of their calories from fast food.