Is it true that cancer rates are higher in males than in females? why is that?

Good question: Some cancers are sex-specific (ovarian in women, prostate in men). Others, like breast, are more common in women because they have more breast tissue and the right hormone environment. Yet others are associated with habits like smoking or drinking that used to be more prevalent in males so men would have them more often. Finally, some are more common in a specific gender for unclear reasons...