This treatment is a combination of acid-neutralizing minerals like calcium and magnesium to supply proper mineralization and to correct the acid/alkaline balance of the body. Two proponents of this treatment are Carl J. Reich, M.D. and Bob Barefoot. In addition another approach is the use of Potassium, Rubidium and especially Cesium, which are alkaline elements. When taken, it is believed they alkalinize cancer cells (neutralize their acid nature). Cancer cells do not survive in the higher PH ranges and die off.