A Sad Disease

It seems like every day you hear about someone you know that has been diagnosed with cancer. In todays day and age it seems that there is a new cancer that becomes known and yet we have no idea from where it comes from. There are people that I know who have died or are dying from what started out as something small but grew into something that had no cure. Cancer like mesothelioma is just like that. It starts out small, surrounding one area like the lungs and then spreading throughout the body. What can be done about this problem?