How to Lose Fat & Gain Muscle With Nutrition | Alan Aragon

Andrew Huberman and Alan Aragon work through the most confusing topics in nutrition and fitness, separating myth from evidence. They cover how much protein the body can actually use per meal, whether the post-workout anabolic window matters, and whether fasted training burns more fat. Aragon explains why total daily protein dwarfs timing, how recomposition (gaining muscle while losing fat) is possible, and why plant proteins can match animal proteins when total protein is high enough. The conversation also tackles sugar, artificial sweeteners, alcohol, seed oils, collagen, women's nutrition, and Aragon's personal supplement stack and training style.

• A 2016 McNaughton study showed 40g of protein beat 20g for muscle protein synthesis, overturning the old 'you can only use 25-30g per meal' rule.
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• To max muscle protein synthesis per meal, aim for 0.2-0.25g protein per pound of body weight (0.4-0.6g/kg).
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• The 'anabolic window' is actually days, not hours - muscle protein synthesis peaks 24 hours after training and stays elevated 48-72 hours.
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• Fasted training does burn more fat during the workout, but it evens out by end of day when total calories are equal - so it doesn't matter for fat loss.
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• You can gain muscle and lose fat simultaneously - and it does not even require a caloric deficit.
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• Seed oils are over-vilified; the literature shows more adverse outcomes from butter, tallow and lard than from seed oils.
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• A meta-analysis found canola oil outperforms olive oil for lowering LDL cholesterol, partly due to canola's high omega-3 content.
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• Huberman shares he hasn't had a single drink in almost seven years and that quitting taught him to sit with his feelings instead of using an 'alcohol Band-Aid.'
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• As long as total daily protein is ~1.6-1.7g/kg (0.7g/lb) or more, protein timing around training makes no difference.
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• In a 12-week study, a fully vegan group matched omnivores for muscle size and strength gains when protein hit 1.6g/kg, despite eating fewer essential amino acids.
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• Adding 50-100g of protein on top of habitual intake led subjects to lose fat or stay the same - one even reported sweating in his sleep from the thermic effect.
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• On an ad libitum ketogenic diet people spontaneously eat 400-900 fewer calories per day, largely due to the satiety of protein and fat.
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• An umbrella review found coffee is net positive for cardiovascular health and mortality, with benefits cutting off around three to four cups a day.
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• The working recommendation is to limit added sugars to about 10% of calories, roughly 40-50g a day on a 2,000-calorie diet.
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• In the large SWAN study, the menopausal transition caused on average only 3.5 lbs fat gain and half a pound of lean mass loss - far less than the scaremongering suggests.
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• Skin is about 80% collagen by dry weight, and collagen comprises 20-40% of the body's total protein.
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• Of all sweeteners studied, saccharin shows the most adverse potential - but it's nearly commercially extinct.
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• Some studies show higher hexane levels in olive oil than in certain seed oils, but all are well below safe thresholds.
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