Expert profile
Dr. Donald Layman
Professor Emeritus of Nutrition
Protein metabolism • muscle protein synthesis • healthy aging
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124 minAnalysed
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About the expert
Focus: Dietary protein, muscle protein synthesis, healthy aging, and leucine signaling
Dr. Donald Layman is a professor emeritus whose lifetime research focuses on dietary protein, muscle protein synthesis, leucine signaling, and the role of adequate protein in healthy aging. He has been a leading voice arguing that conventional protein RDAs underestimate human needs, especially in older adults.
Expert discussions with Dr. Donald Layman
Layman: How much protein adults may actually need for muscle, metabolism, and healthy aging
Many adults over 40 may not eat enough protein to fully protect muscle mass and metabolic resilience. A substantial high-quality protein meal in the morning may matter more than spreading the same total evenly across the day. Common kidney concerns about higher protein appear overstated in healthy adults.