Fast-food density, neighbourhood walkability influence weight, waist size
Washington, Mar 4 (ANI): People living in neighbourhoods with high density of fast food outlets, and who frequently eat at those restaurants, are more likely to report an increase of 3 pounds in weight and .8 inches in waist circumference, according to a new study.
On the other hand, the research led by Oregon Research Institute (ORI) scientist Fuzhong Li, Ph.D., also found that high-walkability neighbourhoods were linked with a decrease of 2.7 pounds in weight and 0.6 inches in waist size among residents who increased their levels of vigorous physical activity during a year.
"This is one of the few longitudinal studies that focus on change in individuals' body weight over time in relation to their lifestyle behaviors and immediate living environments," said Li.
He added: "The uniqueness of this study lies in its environment-person approach which we use to show that health-impeding environments, such as a high density of fast-food outlets, together with residents' behavior, such as eating fast food regularly, can have an unhealthy impact on body weight. On the other hand, health-promoting environments, such as walkable neighborhood streets, in conjunction with physically active residents, can have a positive impact on body weight over time."
The study is part of the Portland Oregon Neighborhood Environment and Health Study where researchers are following a sample of over 1200 local residents ages 50-75 years old over a three-year period.
And they are using anthropometric and survey measures, such as body weight, height, eating habits, food intake, physical activity, and perceptions of their immediate neighbourhood environment.
Also, the scientists have taken objective measures of built environment characteristics, such as land-use mix, density of fast-food outlets, street connectivity, and public transit stations, and the presence of green and open spaces in 120 randomly selected neighborhoods in Portland, Oregon.
The project was aimed to examine change in body weight and physical activity in relation to built environment.
"To combat the obesity/overweight problem, it appears clear that, from the perspectives of public health and urban design, efforts are needed to improve features of modifiable built environments by making them more conducive to healthy eating and increasing physical activity," said Li.
The American Journal of Epidemiology recently published the study. (ANI)
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