By 1902, Beck was living and practicing as a medical doctor in the United States. In 1912 he sued the estate of the late
Mary A. Mason of New York and Great Barrington for fees of $7,000 for medical treatment given in 1909 and 1910. He was supported by the testimony of Dr.
Caesar A. von Ramdohr, who said that any fee from $5,000 to $10,000 would be a fair fee for a doctor of Beck's standing. He was naturalized as an American citizen in 1919. He was on the staff of
St. Mark's Hospital for many years and also in private practice at 116
East 58th Street between Park and Lexington Avenues in New York City. He specialized in the treatment of arthritic and rheumatoid conditions using bee venom and coined the term "bee venom therapy" which he described in his book
Bee venom therapy: Bee venom, its nature, and its effect on arthritic and rheumatoid conditions (1935). In 1938 he produced
Honey and health: A nutrimental, medicinal and historical commentary. In 1937,
The Coshocton Tribune reported that at the beekeepers' conference in Washington, D.C., Beck explained his discovery. After a series of experiments, he said, he had discovered that arthritis was caused by
suboxidation, the lack of oxygen in the bloodstream, and that the venom from the sting of a bee entering the bloodstream gave off
ultraviolet rays that provided oxygen to diseased tissue. He used from 20 to 75 or 100 bee stings per patient, from bees bred in his own hives outside his office specially for the purpose. He stated that arthritic patients were almost immune to the pain of the sting. Beck died in
Kingston, New York, on 1 January 1942, at the age of 73. His books have been reprinted since his death under new titles,
Bee Venom Therapy as
The Bible of Bee Venom Therapy, and
Honey and Health in a revised edition as
Honey and Your Health with
Dorée Smedley. ==Reception==