I've found this on the next site Internet
http://www.cancer-health.org/ I think could be possible
"If Mobile Phones Were a Type of Food, They Simply Would Not be Licensed".Cellular phone increases the risk of brain cancer (brain tumor).Cellular phones can do biological damage through heating effects. Cellular phone causes symptoms: including headaches, earaches, blurring of vision, short-term memory loss, numbing, tingling, and burning sensations, bad sleep,fatigue, Anxiety.
Single and double strand DNA breaks in brain cells increased after exposure to RF. Exposure to both continuous wave and pulsed RF (mobil phone) produced DNA damage. Double strand breaks, if not repaired, are known to lead to cell death.
Research by other scientists indicates that prolonged use of mobile phones may cause hot-spots to develop inside the brain, causing damage which could lead to Alzheimer’s disease or cancer (brain tumor).