Many people around the world use cell phones in everyday life. As the time spent on cell phones increases, so does the concern that these mobile devices, on which we depend so heavily, are giving us cancer. There is no consistent evidence linking the use of these wireless devices to a specific type of cancer. Additionally, more research is needed to examine cell phone technology and how people use them. Technology and usage habits are constantly changing. According to the Cellular Telecommunications and Internet Association, as of June 2011 there were more than 320 million cell phone subscriptions in the United States. Cell phones emit energy known as radio frequency (RF) waves, so people fear that these RF waves increase the risk of brain cancer or other tumors. This RF energy comes from the cell phone's antenna, where these RF waves are strongest. The closer the antenna is to the head, the greater the exposure to RF energy. Since cell phones are usually held against the head, one might conclude that exposure to these RF waves is affecting our brain or any area near our cell phone antenna. RF waves are a form of electromagnetic radiation, which can be classified into two types: ionizing (high-level frequencies) and non-ionizing (low-level frequencies). These RF waves, otherwise known as radiofrequency energy, are a form of non-ionizing radiation, meaning the energy levels are not great enough to cause ionization of atoms and molecules, according to the U.S. Food and Drug Administration (FDA) (2012). . Additionally, in research from the American Cancer Society (2012), there are a number of factors that influence the amount of RF energy... middle of paper... Retrieved from http://www.fda. gov/ForConsumers/ConsumerUpdates/ucm212273.htmFood and Drug Administration. (2012) Radiation Emitting Products Retrieved from: http://www.fda.gov/RadiationEchangingProducts/RadiationEspiringProductsandProcedures/HomeBusinessandEntertainment/CellPhones/ucm116282.htmHardell.L. Carlberg, M. Mild, K. (2012). The use of cell and cordless phones is associated with an increased risk of glioma and acoustic neuroma. Pathophysiology vol. 2 Number 2 p.85-110National Cancer Institute, (2013). Cell Phones and Cancer Risk Retrieved from http://www.cancer.gov/cancertopics/factsheet/Risk/cellphonesRedmayne,M. (2013). Mobile and cordless phone usage habits of New Zealand teenagers: Are they already at increased risk of brain tumors? A cross-sectional study. Environmental Health Retrieved from http://www.ehjournal.net/content/12/1/5