Naturopathy has used frequencies to treat numerous human ailments successfully for decades. Dr. Royal Raymond Rife undertook some pioneering work of modern day in finding correlation between frequency exposure and healing of human body. More recently Dr. Hulda Regehr Clark published the results of her research in this field in 1993. Results were encouraging enough to keep trying.
Although it is not certain how frequencies help the body but it can be assumed that specific frequencies stimulate the cells. The current carried by the frequencies refreshes the electrical charge of the cells, thereby restoring cellular function. The frequencies themselves increase the mobility of the cells. Another reason for the efficacy of frequencies in a bio-system is likely the resonance phenomenon discovered first by Dr. Rife and further substantiated by Dr. Clark. Microbes are shattered in the human or animal host, when the right frequencies are administered.