mechanistic
Analysis v1
Strong Support
In obese adults following supervised diet and exercise programs designed to create a calorie deficit, 5% to 20% do not lose weight and may even gain weight, even when they follow the plan closely, suggesting that biological differences between individuals affect how well these standard approaches work.
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Evidence from Studies
Supporting (1)
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About Unsuccessful Responders to Diet and Physical Activity Interventions: A Focus on Energy Balance and Body-Weight Loss
Narrative Review
Human
2026 Jan 7Even when people follow diet and exercise plans exactly, some still gain weight or don’t lose any—this study says it’s because everyone’s body reacts differently due to genetics and biology, not because they’re not trying.
Contradicting (0)
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No contradicting evidence found
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