A comprehensive analysis involving 4,213 adults across 34 populations revealed that total energy expenditure (TEE) is not the primary driver of higher obesity rates in economically developed countries. While TEE was higher in wealthier nations, it was primarily attributed to larger body sizes. The significant correlation between obesity and economic development was more closely linked to dietary patterns, particularly the intake of ultraprocessed foods. This suggests that addressing dietary factors may be crucial in obesity prevention strategies, overshadowing physical activity and TEE variations. The study highlights the necessity of further investigation into the societal and environmental influences on dietary habits.

Source: PNAS