Obesity rates have increased rapidly over the past three decades, and research suggests that energy intake from diet may be more critical than exercise in promoting weight gain. A new study published in PNAS found that higher-than-optimal obesity levels are linked to economic development, particularly high calorie diets containing ultra-processed foods.
According to Dr. Thomas M. Holland, a physician-scientist, the study reveals that while exercise remains vital for overall well-being, excessive calorie intake is more strongly associated with weight regulation issues. The researchers estimated total energy expenditure and found that industrialized populations consume more calories, particularly from highly processed and energy-dense foods.
The key takeaway is that the imbalance between calorie intake and energy needs appears to be the primary factor contributing to rising obesity levels. Ultra-processed foods are designed to encourage overconsumption, reducing fecal energy loss and increasing absorbed energy. The study’s findings suggest that policy changes can help promote healthier choices, such as subsidizing healthy food production, restricting junk food marketing, and improving food labeling.
Dr. Holland emphasizes the importance of addressing obesity early, particularly in underserved populations, through preventive health programs and equitable access to primary care. Public policy can play a pivotal role in shaping food environments and promoting physical activity by investing in infrastructure and implementing policies that guide healthier choices.
Source: https://www.medicalnewstoday.com/articles/for-weight-loss-diet-may-matter-more-than-exercise