Cancer Alternative Thoughts

When we say cancer, the vision of a very sick person comes into my mind. But there are so many other "body-born diseases" in the books also, like Diabetes, PD, MS, AIDS, Alzheimers, and allergies and many kinds of Cancer and tumors and Leukemia and on... but I believe that body born diseases have something very important in common; I believe they occur because our natural resistance is unable to control them.