Ellie Marks says her husband is suffering from the same type of brain tumor that killed Senator Ted Kennedy. She says her husband's constant use of his cell phone may have caused the cancer.
Marks, along with other witnesses, are testifying before a Senate Committee today, telling their stories.
"Unfortunately his brain tumor changed his personality drastically," says Marks.
She traveled from San Francisco to Washington, DC, to testify. She says her husband, Allen, is too sick to travel.
She says he used his cell phone several hours a day, every day, for 20 years for business. Marks says even doctors blame the cell phone and the radio waves that they can emit.
"That phone was glued to his right ear and the tumor is on the right side of his head," says Marks.
"She has an unusual situation in that her husband used a cell phone for an extraordinary amount of time, and while it's difficult to be certain what the causes were of his brain tumor, the likelihood of the hours and hours on the cell phone could be attributed to his brain tumor," says Dr. Devra Davis of the University of Pittsburgh.
So what are the real dangers?
Recent studies show, you should take safety measures, and children are especially at risk. Experts say use an ear piece, don't keep your cell phone on your body, and children should not put cell phones right next to their heads.
The FDA and the lobbying group The Wireless Association, say the research has not been conclusive enough to strengthen the warnings on cell phones.
Senators will review the testimony.
Click for the Environmental Working Group's list of cell phones & radiation.