Years ago, I never feared illness, wouldn't visit the doc for anything because I always figured "it was nothing". Then one year I was found to have a curable skin cancer which took me to a doctor. This just started the cycle where doctors started finding all kinds of things wrong with me. I had several big scares, but all turned out ok. Now I seem to be scared of every ache and pain. My ears ring all of the time and I never feel well. My biggest fear is being unable to take care of my family. This keeps me in an almost constant state of panic. With a health care system that is driven by cost cutting, it is hard to gain a comfort level. I'm sure a full body scan showing nothing wrong would be a great reassurance, but let's face it, it's not an affordable option. How much early detection isn't detected due to cost? What I can offer is to tell you that you are not alone. It's not an easy thing to do when you don't feel well, but I believe the best thing to do is help yourself as much as you can with a healthy diet and exercise. This can only improve your odds. :)