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Free will and the obesity epidemic
David A Levitsky1, Carly R Pacanowski
1Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA. dal4@cornell.edu
Public Health Nutrition
|September 20, 2011
Summary
The obesity epidemic is driven by increased food intake, not just free will. Environmental factors significantly influence eating habits, suggesting a need for external controls beyond individual choice to manage weight.
Area of Science:
- Public Health
- Behavioral Science
- Nutrition Science
Background:
- The United States faces an 'obesity epidemic' characterized by significant body weight increases over recent decades.
- Empirical literature suggests a correlation between increased body weight and elevated food intake.
- Public perception attributes weight gain to individual free will, influencing approaches to weight management.
Purpose of the Study:
- To investigate the role of environmental factors in food consumption and their contribution to the obesity epidemic.
- To challenge the notion that individual free will solely determines eating behavior and subsequent weight gain.
- To explore effective strategies for curbing the obesity epidemic by addressing environmental influences on eating.
Main Methods:
- Literature analysis to understand the relationship between food intake and body weight.
- Examination of environmental variables (e.g., portion size, food variety, advertising) that influence energy intake.
- Review of the effectiveness of various weight-loss interventions and maintenance strategies.
Main Results:
- Environmental factors such as portion size, food variety, diet fat content, social dining context, and food advertising significantly increase energy intake.
- Individual-focused weight loss methods (diets, clubs, drugs) often fail to produce lasting results when individuals return to their natural environment.
- Sustained weight reduction is primarily achieved through interventions that control environmental variables, such as gastric surgery or portion-controlled meals.
Conclusions:
- Eating behavior and subsequent weight gain are heavily influenced by environmental 'food primes,' not solely by individual free choice.
- Effective strategies for combating the obesity epidemic must acknowledge and mitigate these environmental influences.
- Combining daily weight monitoring with an acceptance of external influences on eating behavior may be key to successful weight management and curbing the epidemic.
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