Using cell phones may increase risk of vestibulr schwannomas, a Korean new study in Tumor Biology suggests.   The study led by Korean researchers at Yonsei University School of Medicine in South Korea shows that cell phone use was positively associated with incidence of the tumor and the volume of the tumor.   The study was based on information from 119 patients who had undergone surgical tumor removal.   The study also shows that tumors were 4.5 times more likely developed on the side where cell phones were used than the other side.   Researchers concluded "there is a possibility that mobile phone use may affect tumor growth."  It’s believed that increased risk of tumors have something to do with oxidative stress induced by cell phone radio waves or radiofrequency.  Some studies show that taking vitamin C supplements may reduce oxidative stress and lower the risk of tumor development in cell phone users.

A vestibular schwannoma, also known as acoustic neuroma, acoustic neurinoma, or acoustic neurilemoma, is a benign tumor that usually slowly grows from the balance and hearing nerves supplying the inner ear. (David Liu, PHD)

Reference

In Seok Moon, Bo Gyung Kim, Jinna Kim, Jong Dae Lee, Won-Sang Lee, Association between vestibular schwannomas and mobile phone use, Tumor Biology, January 2014, Volume 35, Issue 1, pp 581-587.