This paper examines the effects of food prices on clinical measures of obesity, including body mass index (BMI) and percentage body fat (PBF) measures derived from bioelectrical impedance analysis (BIA) and dual energy x-ray absorptiometry (DXA), among youths ages 12 to 18. Using three waves of National Health and Nutrition Examination Survey (NHANES) data (1999-2000, 2001-2002, and 2003-2004) merged with several food prices measured by county and year, researchers found that increases in the real price of one calorie of food for home consumption and the real price of fast food result in significant reductions in the PBF among youths. They also found that an increase in the real price of fruits and vegetables has negative consequences for body composition outcomes. The results of the study indicate that measures of PBF derived from BIA and DXA are no less sensitive, and in some cases more sensitive, to fast food and fruits and vegetables prices than BMI.
A sedentary lifestyle lacking physical activity, and consumption of calorie-dense foods and sugary drinks, have long been associated with obesity. But studies indicate that the inflation-adjusted cost of food, which has been falling, is also contributing to the recent epidemic of obesity. This issue brief highlights the results of a … More
This paper discusses the results of the first study to analyze the effects of fast-food advertising on body composition among youths as measured by percentage body fat (PBF). The study also examined the sensitivity of these effects to measuring youth obesity using body mass index (BMI). Researchers found that exposure … More
The aim of this project is to provide a comprehensive investigation of the relationship between food prices and food advertising on childhood obesity using multiple data sources that span the period of the last three decades, as well as using the latest advances in technology for measuring obesity and physical … More