Evidence-Based Fat Loss
Layne Norton strips fat loss to what evidence proves: a sustainable calorie deficit, protein set by lean body mass, resistance training. It also calls for high fiber for satiety, with no foods banned. Adherence, not extreme cutting, drives results, and he publicly updates his recommendations, for example dropping BCAAs once the data showed no benefit.
Set a modest, sustainable calorie deficit A deficit you can hold for months, not an extreme cut
Adherence over time beats aggressive deficits you quit in two weeks.
Prioritise protein off lean body mass Up to ~2.4 to 3 g per kg of lean body mass in a fat-loss phase (roughly 1 g per lb of goal weight)
Protein preserves muscle and is the most satiating macronutrient in a deficit.
Keep fibre high ~40 to 60 g fibre per day
Major lever for fullness and overall health in a deficit.
Resistance train and stay active Lift 3 to 4x per week; keep daily steps up
Signals the body to keep muscle and lose fat.
Track and adjust weekly Weigh trends over weeks, not days; adjust calories if progress stalls
Removes guesswork and the emotional noise of daily fluctuations.
Creatine and caffeine Creatine monohydrate 5 g/day; caffeine pre-training as desired
Two of his three strongest-evidence supplements for performance and body composition.
Fish oil and beta-alanine High-EPA/DHA fish oil daily; beta-alanine ~6 g/day if training hard
Decent-evidence adjuncts. Note: he publicly dropped BCAAs once the evidence did not support them, which is the standard to hold.
Fat loss comes down to a sustained energy deficit, and adherence is what makes that deficit happen.
View sources
Dr. Layne Norton: The Science of Eating for Health, Fat Loss & Lean Muscle (Huberman Lab)
Are BCAAs a waste of money?
Dr. Layne Norton: The Science of Eating for Fat Loss & Lean Muscle (Huberman Lab #97)
Energy balance, nutrition & building muscle (Layne Norton on The Drive with Peter Attia)
Evidence-based recommendations for natural bodybuilding contest prep: nutrition and supplementation (Helms, Aragon, Fitschen, JISSN 2014)
Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol is an independent platform. This protocol is based on the publicly available work of Layne Norton and is not created, reviewed, endorsed by, or affiliated with Layne Norton or PhD · Nutritional Sciences · BioLayne.
Is this for you
- Anyone confused by fad diets
- People who want a sustainable approach
- Lifters in a cut
- Data-minded people who will track and adjust
Cautions
- History of disordered eating: avoid calorie and macro tracking, and seek support
- Protein targets use lean or goal body weight, not current weight; people with kidney disease should check with a doctor
- Supplements are a small lever; nail calories, protein and training first
- Educational only, not medical advice
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