Nutr Res Pract.  2016 Oct;10(5):530-536. 10.4162/nrp.2016.10.5.530.

Food deserts in Korea? A GIS analysis of food consumption patterns at sub-district level in Seoul using the KNHANES 2008-2012 data

Affiliations
  • 1School of Economic, Political and Policy Sciences, The University of Texas at Dallas, Richardson, TX 75080-3021, United States.
  • 2Department of Urban Policy and Administration, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea. changkillee@incheon.ac.kr
  • 3Division of Architecture and Urban Planning, Incheon National University, Incheon 22012, Korea.

Abstract

BACKGROUND/OBJECTIVES
The concept of "food deserts" has been widely used in Western countries as a framework to identify areas with constrained access to fresh and nutritious foods, providing guidelines for targeted nutrition and public health programs. Unlike the vast amount of literature on food deserts in a Western context, only a few studies have addressed the concept in an East Asian context, and none of them have investigated spatial patterns of unhealthy food consumption from a South Korean perspective.
SUBJECTS/METHODS
We first evaluated the applicability of food deserts in a Korean setting and identified four Korean-specific unhealthy food consumption indicators, including insufficient food consumption due to financial difficulty, limited consumption of fruits and vegetables, excessive consumption of junk food, and excessive consumption of instant noodles. The KNHANES 2008-2012 data in Seoul were analyzed with stratified sampling weights to understand the trends and basic characteristics of these eating patterns in each category. GIS analyses were then conducted for the data spatially aggregated at the sub-district level in order to create maps identifying areas of concern regarding each of these indicators and their combinations.
RESULTS
Despite significant reduction in the rate of food insufficiency due to financial difficulty, the rates of excessive consumption of unhealthy foods (junk food and instant noodles) as well as limited consumption of fruits and vegetables have increased or remained high. These patterns tend to be found among relatively younger and more educated groups, regardless of income status.
CONCLUSIONS
A GIS-based analysis demonstrated several hotspots as potential "food deserts" tailored to the Korean context based on the observed spatial patterns of undesirable food consumption. These findings could be used as a guide to prioritize areas for targeted intervention programs to facilitate healthy food consumption behaviors and thus improve nutrition and food-related health outcomes.

Keyword

Food deserts; food intake; spatial analysis; nutrition policy; Seoul

MeSH Terms

Asian Continental Ancestry Group
Eating
Fruit
Humans
Korea*
Nutrition Policy
Public Health
Seoul*
Spatial Analysis
Vegetables
Weights and Measures

Figure

  • Fig. 1 Trends in unhealthy food consumption patterns in Seoul (2008-2012)

  • Fig. 2 Maps of sub-distract level percentages of people showing (a) insufficient food consumption due to financial difficulty, (b) limited consumption of fruits and vegetables, (c) excessive consumption of junk food, and (d) excessive consumption of instant noodles

  • Fig. 3 Weighted sum overlay map of all unhealthy food consumption indicators


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