Cancer's scary enough without the overwhelming amount of information out there about its triggers and treatments. Between oft-repeated rumors and official studies that are subsequently questioned or even overturned, it can be hard to know what to believe and what to dismiss. The good news: Over time, researchers have consistently disproven some of the most common myths about cancer. Read on to separate the fear from the facts. The myth: Cell phone use causes cancer. Gab all you want: Talking on