Cell Phone and Brain Cancer

I usually only put happy fun stuff on my blog, but for years I have hated the feeling of having a cell phone near my head. I try to always use an earpiece and I uncourage those that I love to do the same. Please just think about how obvious it would be that the electromagnetic field of a cell phone would interfere with the electromagnetic field of the human brain. Please use a hands free just to be on the safe side.