There are many diseases and health problems that I never heard of growing up.  Take Mesothelioma, for example.  When I first heard about it several years ago, I had to look it up and do research.  According to Wikipedia, Mesothelioma is a rare form of cancer that develops from the protective lining that covers many of the body’s internal organs.  That lining is called the mesothelium, and that type of cancer is usually caused by exposure to asbestos.   Even washing the clothes of a person who works with asbestos can put a person at risk.   So now, when someone mentions Mesothelioma, I know what they’re talking about.