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

Alan emphasizes that total daily protein is the 'cake' and timing is just 'icing'. Studies show that as long as total protein is adequate (~1.6 g/kg), the distribution and timing relative to training have minimal impact on muscle gain or fat loss. This flexibility allows people to fit protein into their lifestyle without stress.

Alan explains that the 20-30g limit was based on low-volume training studies. Newer research shows that with full-body, high-volume workouts, 40g or even 100g can further increase MPS. However, for practical purposes, 0.2-0.25 g/lb per meal is a good target. He and Brad Schoenfeld derived this from a comprehensive literature review.

Alan and Brad Schoenfeld's 4-week study on women doing low-moderate intensity cardio found no difference in fat loss or lean mass retention between fasted and fed conditions when diets were matched. A later meta-analysis confirmed this. The practical takeaway is to do what feels better and fits your schedule.

Alan cites Chris Barakat's review of 10 recomposition studies, most showing lean mass gain dominant recomposition. Joey Antonio's overfeeding studies with extra protein (up to 2 g/lb) showed no fat gain and sometimes fat loss. The key is a modest surplus and very high protein, combined with consistent resistance training.

Alan notes that this tactic is based on observational experience with clients. He also addresses menopause, recommending that perimenopausal women set more modest fat loss expectations (e.g., half a pound per week) due to symptoms like poor sleep and joint pain that can hinder adherence.

Alan justifies each supplement: multivitamin because few people eat a perfectly micronutrient-complete diet; vitamin D3 because benefits are seen above 1000 IU and he takes 4000 IU despite recent controversy; fish oil for omega-3s, though he acknowledges the atrial fib debate; magnesium citrate for bioavailability; creatine for performance; vitamin C for immunity and potential synergy with collagen; collagen for skin and joint health. He emphasizes this is his personal choice and not a universal prescription.

Alan describes this as a way he gamifies his training to keep it fun and avoid formal cardio. He also uses supersets of antagonistic muscles. He acknowledges this is not the most efficient for pure muscle gain but works for his enjoyment and consistency. He recommends standard hypertrophy training with longer rests for clients focused solely on muscle growth.

Alan Aragon explains that the confusion stems from conflating whole-body protein utilization with the specific muscle anabolic response. Early research by McNaughton and colleagues in 2016 compared 20g vs 40g of protein after a high-volume full-body workout (24 sets) and found 40g produced a greater MPS response. Later, Trommelen et al. used 100g of slow-digesting milk protein and saw even higher MPS, though Alan criticizes the lack of an intermediate dose. He and Brad Schoenfeld reviewed the literature and concluded that per-meal doses of 0.4-0.6 g/kg (0.2-0.25 g/lb) maximize MPS. However, he emphasizes that total daily protein is far more important than per-meal distribution, and the anabolic window is actually days, not hours.

Alan and Brad Schoenfeld conducted a meta-analysis in 2013 that found no significant effect of protein timing on strength or hypertrophy when total protein was ≥1.6 g/kg. They also did a 2014 study comparing pre- vs post-exercise whey protein and saw no difference. A 2024 study by Yassin Lak further showed that even with 3-hour nutrient neglect on both sides of training, gains were similar if total protein was high. The key is that a pre-exercise meal provides circulating amino acids during and after training. The anabolic window is actually days, not hours, so as long as total daily protein is met, timing is a minor detail.

Alan and Brad Schoenfeld conducted a 4-week study on college-age women doing low-moderate intensity cardio, either fasted or fed a meal replacement pre-exercise. Both groups lost significant body fat with no difference between conditions, and both maintained lean mass. A later meta-analysis by Hagstrom and Hackett confirmed no significant advantage for fasted training on body composition when nutrition is equated. The practical takeaway: train fasted or fed based on personal preference, as long as total daily calories and protein are controlled.

Alan cites a review by Chris Barakat of 10 studies showing recomposition, with 7 out of 10 being lean mass gain dominant, implying fat loss in a surplus. Joey Antonio's overfeeding studies with extra protein (up to 2 g/lb) showed subjects either recomposed or had no fat gain, despite adding 400-800 calories of protein. Alan suggests a modest surplus of ~10% above maintenance (200-300 calories) with protein at 1-1.5 g/lb. The mechanism may involve increased thermic effect, spontaneous reduction in other macros, and increased non-exercise activity. He notes that in metabolic ward studies without training, overfeeding protein still led to fat gain, so resistance training is key.

Alan discusses two key studies: one by Lorraine et al. using soy protein to boost vegan protein to 1.6 g/kg, and another by Montien et al. using mycoprotein (Quorn). Both found no significant differences in muscle size/strength gains compared to omnivores on a resistance training program. However, Alan notes these were in untrained subjects, so the 'newbie gains' effect may mask differences. He remains cautious about highly trained individuals. He also mentions that pea protein outperformed whey in one 2015 study, but it hasn't been replicated. Overall, plant proteins can be effective if total protein is sufficient, and the resistance training stimulus is robust enough to make protein quality differences secondary.

Alan argues that when comparing seed oils to animal fats like butter, lard, and beef tallow, the evidence shows better health outcomes with seed oils. Canola oil, in particular, has a high omega-3 content and a meta-analysis found it outperformed olive oil in lowering LDL cholesterol. He acknowledges concerns about hexane extraction but notes that hexane levels are well below safety thresholds and even olive oil can contain hexane. He emphasizes that the overall dietary pattern matters more than the cooking oil, and that deep-frying foods regularly is the real issue. He personally prefers olive oil but sees no reason to fear canola. The negative health associations are likely due to seed oils often being consumed with hyper-palatable, ultra-processed foods.

Alan points out that collagen is the most abundant protein in the body, making up 20-40% of total protein, and skin is 80% collagen by dry weight. Isotopic tracer studies show collagen fragments can incorporate into chondrocytes and stimulate activity. He argues that if we accept the need for dietary calcium for bones, it's logical to provide collagen building blocks for connective tissues. He takes 15g daily and believes it's a no-brainer, especially for those who don't eat nose-to-tail. Systematic reviews show benefits for skin outcomes. He also notes that vitamin C may synergize with collagen.

Alan suggests that instead of fighting cravings, women can plan a cyclical diet: three weeks of deficit, then one week at maintenance or higher calories during the menstrual week. This works with the body's natural rhythms. He also addresses menopause, citing the SWAN study showing an average gain of only 1.6 kg of fat and loss of 0.2 kg of lean mass over the 3.5-year transition, suggesting the changes are often exaggerated. He advises setting realistic expectations (e.g., half the rate of fat loss) for perimenopausal women due to symptoms like poor sleep and joint pain.