Jon Henke asks whether I have any evidence that POW's face higher rates of disease or illness than the rest of the population. Here's my source, a POW who was imprisoned with John McCain.
Most of us who survived that experience are now in our late 60's and 70's. Sadly, we have died and are dying off at a greater rate than our non-POW contemporaries. We experienced injuries and malnutrition that are coming home to roost. So I believe John's age (73) and survival expectation are not good for being elected to serve as our President for 4 or more years.
I don't know if John McCain is dying of cancer, and neither does the press. All we know is that he released 1500 pages of medical records for his 2000 campaign and this cycle he allowed selected journalists to look at certain documents for three hours.