Living near fast-food restaurants appears related to an individual’s consumption of these foods whereas living near grocery stores and supermarkets appears generally unrelated to dietary quality, according to a report in the July 11 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. The research was carried out by Janne Boone-Heinonen, Ph.D., from the University of North Carolina at Chapel Hill, and colleagues.
The federal government has made one of its priorities reducing “food deserts,” areas in which healthy food is difficult to find, according to background information in the article. “Such policies stem from limited evidence that food resources are related to obesity and are inequitably allocated according to neighborhood wealth,” write the authors. “Implicit in these policy initiatives is that reduced access to fast food and increased access to supermarkets will translate into improvements in diet behavior and health.”
Researchers assessed this assumption using data from the Coronary Artery Risk Development in Young Adults study, from its baseline in 1985 until 2001. The authors evaluated fast food consumption, diet quality and adherence to fruit-and-vegetable-consumption guidelines as a function of fast food chain, supermarket or grocery store availability within distances of less than one kilometer to more than eight kilometers from study participants’ homes. The 5,115 participants (ages 18 to 30 years at baseline) in Birmingham, Ala.; Chicago; Minneapolis; and Oakland were asked how often they ate fast food, and detailed their food consumption during the prior month as well as usual dietary habits.
Among participants at lower income levels, an association between fast food consumption and fast food availability was observed. This relationship was particularly noticeable among men who had access to fast food between one and three kilometers from where they live. The findings did not suggest strong relationships between supermarkets and diet quality or consumption of fruits and vegetables. Availability of grocery stores had a mixed relationship with eating habits.
“These findings have critical implications for existing and proposed policies aimed at improving access to healthy foods,” write the researchers. “Overall, classification of food stores and restaurants into ‘healthy’ or ‘unhealthy’ according to mode of service (fast food or sit-down) or size (supermarket vs. grocery store) may provide little understanding of how the food environment impacts diet and may overlook innovative policy solutions.” The authors call for further research into the effect of the neighborhood food environment on diet and consumption.
Material adapted from JAMA.
Arch Intern Med. 2011;171:1162-1170.