On his March 9 episode Dr. Oz discussed cancer clusters and how people can work to keep themselves, their families and their communities safer:

One of the first questions people faced with a cancer diagnosis ask is, “What caused this?”, especially when it strikes young children who don’t typically get cancer. Sometimes you learn why; a DNA defect could foreshadow certain types of colon cancer for instance, or an unhealthy behavior such as smoking jacked up your risk. But it could also be something lurking in the environment, a carcinogen that has entered the water supply, soil or the air where we live, work, play or attend school.
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