Roy L. Walford, M.D., (1924-2004) was a gerontologist who pioneered research on effects of a low-calorie diet on aging. In addition to The Anti-Aging Plan he was the author of seven other books, including the bestsellers Maximum Lifespan and The 120 Year Diet. He received his M.D. from the University of Chicago in 1948 and was professor of pathology at the UCLA School of Medicine. Author of 300 scientific articles, Walford was a delegate to the White House Conference on Aging, a member of the National Academy of Sciences Committee on Aging, and is still considered one of America's leading experts on gerontology.

Lisa Walford started cooking seriously at age fifteen. She has traveled extensively throughout Europe and Asia, where she has sampled foods and explored cooking techniques which have influenced her own low-fat cooking style. Walford is a certified yoga instructor with thirteen years of experience, specializing in therapeutic yoga. She is coauthor of The CR Diet and also codeveloped the Windows version of Dr. Walford's Interactive Diet Planner.