The Energy Balance Podcast BV #24: Nick Norwitz Says Calories Don’t Cause Obesity. Is He Wrong?
Feb 24, 2026
A lively take on whether calories alone explain fat gain and when the calories-in/calories-out idea fails. They explore alternative biology: mitochondrial fuel use, hormones, gut and micronutrient effects on storage. A real-world thyroid recovery story is discussed. The conversation shifts to organ meats — benefits, dosing, forms like freeze-dried versus fresh, and practical ways to include them.
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Calories Are A Measurement Not A Model
- Calories are a measurement, not a physiological explanation for obesity.
- Jay Feldman and Mike Fave compare calories to an odometer or gallons of gas: useful to quantify energy but meaningless for why the body stores fat.
Fat Storage Reflects Fuel Conversion Failure
- Obesity arises from disrupted fuel conversion and storage, not just excess food intake.
- Mike Fave and Jay Feldman emphasize mitochondrial dysfunction, hormonal shifts, microbiome/endotoxin effects, and micronutrient deficits that drive fat storage.
Calorie Ledgers Are Often Inaccurate And Post Hoc
- The practical utility of calories is limited by absorption, excretion, and measurement error.
- Jay Feldman notes food-label calorie values can be ~30% off and absorption varies with processing, so calorie ledgers are often inaccurate and post hoc.