Macro partitioning
Ingesting 25–30 g of high-quality protein per meal maximally stimulates muscle protein synthesis in both young and older adults, whereas doses below ~20 g are insufficient to trigger this response in the elderly.
To build or maintain muscle, aim for 25–30 grams of high-quality protein (like meat, eggs, or dairy) at every meal. Don't just focus on your total daily protein; your muscles respond best when they get this specific amount at each eating occasion. If you eat three meals a day, this strategy ensures your muscles are stimulated consistently.
Ingestion of approximately 25–30 g of protein per meal maximally stimulates muscle protein synthesis in both young and older individuals. However, muscle protein synthesis is blunted in elderly when protein and carbohydrate are coingested or when the quantity of protein is less than approximately 20 g per meal.
Why this rating
Based on a review of multiple studies (including Symons et al. and Volpi et al.) showing consistent anabolic responses, though some signaling studies show blunting.
Source
Dietary protein recommendations and the prevention of sarcopenia
Douglas Paddon‐Jones et al. · Current Opinion in Clinical Nutrition & Metabolic Care · 2008
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