Protein rule under scrutiny

OurHealtho’s analysis highlights a per‑meal scaling approach of about 0.4–0.55 g of protein per kilogram of bodyweight — which equates to roughly 30–40 g for a 75‑kg adult — rather than a fixed universal cap. (ourhealtho.com ) (ourhealtho.com) The International Society of Sports Nutrition’s position stand recommends a daily intake of roughly 1.4–2.0 g/kg bodyweight for most exercising individuals and notes that timing and serving recommendations vary by age and recent resistance exercise. (link.springer.com ) (link.springer.com) A 2024 Frontiers in Nutrition review concluded that the importance of protein distribution across meals for body composition is still unresolved and is strongly modulated by age, overall protein quantity, and physical activity level. (frontiersin.org ) (frontiersin.org) A recent MDPI Nutrients analysis found athlete diets in the literature clustered around 1.6–2.2 g/kg/day and reported leucine targets of about 3.8–4.1 g per meal when protein was spread across four eating occasions. (mdpi.com ) (mdpi.com) Digestive absorption studies and reviews show the body can absorb well over 30 g of protein in a single meal, so the “30‑g absorption limit” is a misconception; what matters for muscle building is the muscle protein synthesis response, not absorption per se. (proteinpalapp.com ) (proteinpalapp.com) Controlled trials and synthesis work report a commonly cited MPS “ceiling” of ~25–40 g per meal for many adults, but that ceiling increases after resistance exercise and scales upward with body mass—meaning larger, trained athletes may derive MPS benefit from higher single‑meal protein intakes. (strengthlog.com ) (strengthlog.com) The consistent finding across position statements and reviews is that resistance exercise plus adequate total daily protein drives hypertrophy; recommended strategies in the literature therefore pair higher daily protein targets with evenly distributed, leucine‑rich servings around training. (link.springer.com ) (link.springer.com)