The key to this therapy is getting elevated concentrations of oxygen into the body or tumor using various means. Nobel Prize winner Dr. Otto Warburg showed that cancer cells do not occur in a healthy, oxygenated environment. Many think lack of oxygen is the prime cause of all cancers. An impressive variety of new ways to introduce oxygen into the body are emerging including pressure chambers, liquid oxygen, peroxide, chemical compounds, acid/alkaline balancing, injections, and ozone treatments. Flooding cells with oxygen may retard the growth of cancer cells or even help to return them to normal.