Sine wave inverters with more than three steps in the wave output are more complex and have significantly higher cost than a modified sine wave, with only three steps, or square wave (one step) types of the same power handling.
A healthy cell has a pH of 7.35 while a cancer cell is more acidic. Cesium when taken orally will raise the pH of cancer cells, but not that of normal cells. When the pH of a cancer cell goes above 7.5 it dies and if it goes above 8.0 it will die in a matter of hours.
I am always stunned when I hear people say that their doctors told them to eat cakes, cookies, pies and so on to keep their weight up during chemo and radiation. Sugar is well known to feed cancer cells. Insulin, which is secreted when you eat sugar, is also a growth factor for cancer cells.