Scientists Aim for Test That Could Spot Single Cancer Cell in Blood

Hm-m-m. I've heard that cancer cells are created and destroyed in healthy bodies fairly regularly. No one would want to be treated for something they really didn't have... would they? I'm in the camp that suspects that cancer takes hold when conditions (oxidative stress, how hard the body needs to work to maintain pH, certain nutritional deficiencies, etc.) in the body support the survival and spread of cancer. A healthy immune system probably keeps this from happening.