This week the American Cancer Society published its annual review of cancer statistics and trends.  This year the big picture was overwhelmingly positive. The three most frequently diagnosed cancers in men are prostate cancer, lung cancer, and colorectal cancer (in that order).  For women the top three are breast, lung and colorectal cancer.  (See the link below to Figure 1 in the study for details.)  The incidences (the numbers of new diagnoses every year) of all of these cancers have decrease...