There has been a lot of research into the use of hyperbaric oxygen as a cancer treatment, with mixed or inconclusive results. In 2015, Boston scientists made waves with research that found that flushing tumors with oxygen may improve the efficacy of some medicines. However, the American Cancer Society stated in the same article that \u201cavailable scientific evidence does not support assertions that infusing oxygen-releasing compounds into a person\u2019s body is useful in cancer treatment.\u201d According to a 2012 assessment by Norwegian experts, hyperbaric oxygen reduced the growth of some malignancies but not others. More research is needed, according to the authors. The ability of oxygen therapy to treat cancer and some of the negative effects of cancer surgery and other treatments are still being studied in clinical trials. The outcomes in shrinking cancer cells themselves are essentially non-existent for the money and effort invested.