Source: J. American Dietetic Assn
Summary:
Low energy density foods, that is, foods low in calories for their volume, are recommended for controlling body weight
Energy density surveys at supermarkets found high energy density foods were less expensive than more healthful, low energy density foods: $1.76 vs $18.16 for 1000 calories worth
In 2 years, least energy dense foods went up 19.5% in price, while most dense declined slightly
Conclusion: Highest energy dense foods are much cheaper than lowest energy dense food, partially explaining why obesity is highest in groups with limited income
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