The Checkup with Doctor Mike How RFK Jr. Manipulates Nutrition Research | Kevin Hall
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Aug 31, 2025 
Kevin Hall, a leading metabolism researcher, delves into the intricate power dynamics of nutritional research. He unpacks the impact of ultra-processed foods on appetite and weight, revealing their ties to obesity. The conversation navigates misconceptions around calorie intake, diet types, and metabolic responses. Hall also shares his battle against misinformation and censorship in the field, emphasizing the importance of integrity in nutritional studies for public health. Tune in for a captivating exploration of diet, science, and integrity!
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Models Predicted Metabolism Accurately
- Kevin Hall used quantitative modeling to predict human metabolic responses and then ran tightly controlled clinical experiments to test those predictions.
- The model matched human results closely, showing only tiny metabolic advantages from changing macronutrients when calories are held constant.
Low-Carb Effects Are Real but Small
- Short-term tightly controlled swaps of carbs versus fat produced expected shifts in fuel use but only trivial differences in body fat loss.
- Low-carb physiological effects exist but do not produce the large 'metabolic advantage' often claimed by low-carb promoters.
Metabolic Slowing Follows, Doesn’t Lead
- Metabolic slowing after weight loss appears to be a proportional response, not the primary cause of regain.
- Those who lost most weight showed greatest metabolic adaptation yet many of them maintained more weight loss long-term.
