Donald Layman is a Professor Emeritus at the University of Illinois Urbana-Champaign College of Agricultural, Consumer and Environmental Sciences in the department of Food Science & Human Nutrition. Don earned his B.S. in Chemistry and M.S. in Biochemistry at Illinois State University and his Ph.D. in Human Nutrition and Biochemistry at the University of Minnesota, St. Paul. His research focuses on understanding the protein and amino acid requirements and interrelationship between dietary protein and carbohydrates needed for adult health. In particular, his research seeks to understand the impact of diet and exercise on obesity, type 2 diabetes, and metabolic syndrome in adults. His work has helped to define the role of branched chain amino acids (BCAA) in skeletal muscle metabolism. BCAA provide an important energy source for muscle during exercise and also serve as a critical regulator of muscle protein synthesis during recovery. During exercise, oxidation of BCAA increases, resulting in production of the amino acid alanine and a rapid decline in plasma levels of BCAA. Amino acid supplements prevent this decline in plasma amino acids, enhance recovery of muscle protein synthesis and interact with insulin to help stabilize blood glucose. His research continues to define mechanisms for control of muscle protein synthesis and differences in dietary protein needs for men versus women and for adults with sedentary versus active lifestyles. Don currently consults for many food industry companies including Kraft, Nestle, Hershey, the Dairy Council, the Egg Board, and the Beef Board. [University of Illinois Urbana-Champaign]




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