Rasmus Larssen Alsaker was a Norwegian-American physician and alternative health writer. Alsaker was born in Norway. He received his M.D. from Bennett Medical College in Chicago in 1910. He was licensed to practice medicine in Illinois, Colorado (1910), and Missouri (1915). He served as Health Director of the Sun-Diet Health Foundation in East Aurora, New York, succeeding William Howard Hay. Alsaker wrote a series of books on the "Alsaker Way" to health. Alsaker claimed that his nutritional strategy could treat almost every ailment. Medical professionals cautioned that Alsaker was deceiving the public into self-diagnosing and self-treating heart ailments. Alsaker was the medical director for Bernarr Macfadden's Health Service Bureau and an editor for Health Culture magazine. He also served as the editor of The Key to Health magazine. Alsaker retired and relocated to Florida in 1956. He was an amateur malacologist who collected volutidae shells. He died on June 14, 1960 in St. Petersburg, Florida.