Recently, there have been many reports that light therapy may benefit oral mucositis for those patients following whole body irradiation treatments for cancer. In this double-blind randomized controlled study, 24 adult patients underwent chemotherapy during 2009-2010. The results correlated with those shown in previous studies, where, the light therapy was able to decrease the effect of chemotherapy on oral mucositis and pain in a variety of malignancies. The significance of this study is quite huge, as oral mucositis represents a very painful disorder for those undergoing cancer treatments, where conventional therapies have not been effectively helping towards the intense pain that they go through <read study>