Can I have brain tumor?

Sleeping with an alarm clock by your head can increase the chances.You should have no TV near your head when you sleep.Cell phones may increase the risk of cancer.I don`t know if you would have any symptoms at firstTake melatonin an hour before bed.This shrinks tumors and is a natural hormone in your body.Many people are deficient,due to sleeping with lights on.To much lighting at night.