Which 19th-century American physician promoted Graham bread as part of the Graham diet?

Sylvester Graham promoted Graham bread as part of the Graham diet.

Sylvester Graham was a 19th-century American Presbyterian minister and dietary reformer. He advocated a simple diet centered on whole-wheat Graham bread, fruits, vegetables, and other minimally processed foods. His ideas emerged during the antebellum health-reform movement and were linked to beliefs about moderation, self-control, and physical well-being.

Graham bread was made from coarsely ground whole-wheat flour. The name later became associated with Graham crackers, although modern commercial versions are sweeter and are not identical to the original reform bread. Graham’s teachings also influenced later vegetarian and health-food movements.

He is sometimes confused with John Harvey Kellogg, another American health reformer associated with breakfast cereals and sanitarium food. Kellogg lived later and worked in a different institutional setting. Graham’s direct legacy in breakfast history is the name “Graham” attached to whole-wheat products.