Ruth B. Drown

Ruth Beymer Drown (October 21, 1891 – March 13, 1965) was an American chiropractic and proponent of radionics.

Drown who operated in Los Angeles was influenced by the devices of Albert Abrams. She invented radio devices which she claimed could cure any patient in the world, just from blood-sampling.

Drown's devices were investigated by the American Medical Association in 1950 at the University of Chicago with unsatisfactory results. Science writer Martin Gardner noted that "Drown was given blood specimens from ten patients. Her diagnoses of the first three were so erroneous that she did not even attempt the remaining seven." The committee stated that the devices were quackery and concluded "her alleged successes rest solely on the noncritical attitude of her followers".

Drown was investigated by the California State Bureau of Food and Drug Inspection and charged with grand theft in 1963. She died before the case came to trial.

• The Science and Philosophy of the Drown Radio Therapy (1938)
• The Theory and Technique of the Drown Radio Therapy and Radio Vision Instruments (1939)
• Wisdom From Atlantis (1946)