Caffeine is the most popular drug in North America and in many other parts of the world. It is found in coffee, tea, cola beverages, and chocolate. Coffee drinking may be related to cancer of the lower urinary tract, including the bladder. Studies show that the risk for these cancers is independent of other factors [...]

Without effective treatment, the primary cancer continues to grow at a fairly steady rate, pressing on, and eventually growing through, nearby structures. Sooner or later, nearly all untreated or unsuccessfully treated cancers give rise to secondary growths. For each particular type of cancer, there is a characteristic or average pattern. For example, a cancer starting [...]