The correlation between supermarket size and national obesity prevalence

Conclusions Explanations for the association between store size and national obesity prevalence may include larger and less frequent shopping trips and greater choice and exposure to foods in countries with larger stores. Large supermarkets may represent a food system that focuses on quantity ahead of quality and therefore may be an important and novel environmental indicator of a pattern of behaviour that encourages obesity.
Source: BMC Obesity - Category: Eating Disorders and Weight Management Source Type: research