The pulsed high-frequency electromagnetic fields emitted by cellular phones can affect response patterns of human brain activity. German investigators found that electromagnetic fields emitted by cellular phones could "...alter distinct aspects of the brain electrical response during an acoustic task. The new findings add to the understanding of how mobile phone use can affect brain functions.
Neuroreport October 5, 1998;9:3229-3232.
COMMENT: Folks, cell phones are NOT good for your health. The less you use them the better. I would strongly recommend keeping your use down to less than five minutes per month.