Up to 80% of cancers may be caused by this! (Video)

What if nearly 80% of all cancers had a common trigger, but nobody knew about it? Mark Schauss discusses a specific study that points in that direction. He also explains why it hasn’t received too much attention. If it is even close to being accurate, is there anything you can do about it? Do you think up to 80% of cancers may be caused by this?