A global study of 4,213 adults found that processed food consumption is the primary driver of the obesity epidemic in developed nations, rather than decreased physical activity.
Contrary to common assumptions, the research suggests that people living in wealthier countries burn more daily calories than those in traditional lifestyles, yet are also significantly fatter. The study, published in the Proceedings of the National Academy of Sciences, reveals that ultra-processed foods are a major contributor to obesity, with higher intake leading to increased body fat.
The researchers used a technique called “doubly labeled water” to measure total energy expenditure in real-world settings and found that developed countries burned more calories per day than less developed ones. However, physical activity levels remained unchanged across different lifestyles.
The study’s findings suggest that dietary intake, particularly ultra-processed foods, plays a far greater role in obesity than reduced expenditure. The researchers noted that the percentage of ultra-processed foods in people’s diets was strongly linked to higher body fat percentages, indicating that food quality is the key issue rather than movement.
While physical activity remains vital for overall health, the study emphasizes that addressing dietary habits is crucial in combating obesity. The research highlights the need to shift focus from individual-level advice to changing the food environment and reducing access to unhealthy foods.
The study’s results have significant implications for public health campaigns and policies aimed at tackling obesity. With decades of public health recommendations focusing on “eat less, move more,” this study suggests it’s time to rethink the approach and prioritize dietary changes.
Source: https://studyfinds.org/why-americans-keep-gaining-weight-despite-burning-more-calories-than-ever