"Breathing supplemental oxygen opens up the gates of the tumor fortress and wakes up 'sleepy' anti-tumor cells, enabling these soldiers to enter the fortress and destroy it," Sitkovsy explained. "However, if anti-tumor immune cells are not present, oxygen will have no impact."
Sitkovsky said the effects of supplemental oxygenation might be even stronger in combination with a synthetic agent that he calls "super-caffeine," which blocks the tumor-protecting effects of cancer cells. "The anti-tumor effects of supplemental oxygen can be further improved by the natural antagonist [tumor-suppressing cell activity], which happens to be the caffeine in your coffee," Sitkovsky said.
read more at: http://www.newsmax.com/Health/Health-News/oxygen-therapy-cancer-breakthrough/2015/03/05/id/628530/