The nutrition of man

^{Russell Henry Chittenden (1856–1943) was a pioneering American physiologist and biochemist, often referred to as the “father of American nutrition science.” He served as a professor of physiological chemistry at Yale University and conducted influential studies on protein metabolism and human dietary needs. His work debunked long-standing beliefs about excessive protein requirements and contributed to foundational shifts in nutritional theory. Chittenden's rigorous experimental methodology and reformist dietary conclusions continue to influence both scientific and popular understandings of food, health, and metabolism.}