You can't outrun a bad diet. Food not lack of exercise fuels obesity, study finds
Summary
A new study found that diet, not a lack of exercise, is the main reason for obesity. Researchers discovered that people in different countries burn similar amounts of calories each day, regardless of their activity levels.Key Facts
- A study was published in the journal PNAS by a team led by Herman Pontzer.
- The team compared how many calories people from various countries burn daily.
- They studied people from 34 countries, with varying lifestyles from active farmers to sedentary office workers.
- The study found calorie burning was similar across different groups despite different activity levels.
- The findings suggest diet, not exercise, is the main cause of obesity.
- Over 4,200 adult men and women participated in the study.
- Researchers used special water with isotopes to measure energy expenditure.
- Previous beliefs suggested more sedentary lifestyles in developed countries led to obesity, but the study challenges this idea.
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