Obesity was rare in the 1800s in the U.S., but has risen significantly in developed nations due to lifestyle changes. A study found total calorie burn similar across various cultures, including sedentary and active populations. Researchers analyzing data from 34 countries concluded that daily calorie expenditure does not differ greatly, suggesting that diet plays a more crucial role in weight gain and obesity than previously assumed. This finding challenges widely held beliefs about the causes of obesity in modern society.
The total calories burned per day is similar across different populations, even with varying lifestyles and activity levels, challenging common assumptions about obesity.
Diet, rather than inactivity, is a primary driver of weight gain and obesity, as highlighted by the study's findings involving over 4,200 adults from various cultures.
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