Macronutrients and Obesity: Revisiting the Calories in, Calories out Framework

46 Pages Posted: 15 Jun 2013 Last revised: 20 Jan 2014

Date Written: July 19, 2013

Abstract

Recent clinical research has studied weight responses to varying diet composition, but the contribution of changes in macronutrient intake and physical activity to rising population weight remains unknown. Research on the economics of obesity typically assumes a “calories in, calories out” framework, but a richer weight production model separating caloric intake into carbohydrates, fat, and protein, has not been explored. To estimate the contributions of changes in macronutrient intake and physical activity to changes in population weight, we conducted dynamic time series and structural VAR analyses of U.S. data between 1974 and 2006 and a panel analysis of 164 countries between 2001 and 2010. Findings from all analyses suggest that increases in carbohydrates are most strongly and positively associated with increases in obesity prevalence even when controlling for changes in total caloric intake and occupation-related physical activity. If anything, increases in fat intake are associated with decreases in population weight.

Keywords: Obesity, Macronutrients, Health Production

JEL Classification: I12, I15, O13, Q18

Suggested Citation

Riera-Crichton, Daniel and Tefft, Nathan, Macronutrients and Obesity: Revisiting the Calories in, Calories out Framework (July 19, 2013). Available at SSRN: https://ssrn.com/abstract=2279503 or http://dx.doi.org/10.2139/ssrn.2279503

Daniel Riera-Crichton

Bates College ( email )

Lewiston, ME 04240
United States

Nathan Tefft (Contact Author)

Bates College ( email )

Lewiston, ME 04240
United States

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