Evolutionary and anthropological perspectives on optimal foraging in obesogenic environments

Area of Science:

• Behavioral Economics
• Nutritional Science
• Public Health

Background:

• The global nutrition transition has led to widespread increases in obesity.
• Modern food environments present challenges to maintaining a healthy weight.

Purpose of the Study:

• To apply optimal foraging theory to understand the drivers of caloric surfeit and obesity.
• To analyze how current food environments exploit human cognitive and behavioral strategies.

Main Methods:

• Utilized cost/benefit models from optimal foraging theory.
• Analyzed experimental and naturalistic observations of human feeding behaviors.
• Examined environmental factors contributing to overconsumption.

Main Results:

• Obesogenic environments offer abundant, energy-dense foods with low processing costs.
• Marketing strategies like advertising, supersizing, and convenience exploit human foraging biases.
• Distractions during eating impair portion monitoring, contributing to excess calorie intake.

Conclusions:

• Optimal foraging theory provides a framework for understanding obesity drivers in modern food environments.
• Environmental manipulations and food industry practices promote overconsumption.
• Addressing the obesity pandemic requires understanding and counteracting these evolved foraging strategies.