Should Americans care? Of course, because history shows us that people who make outlandish claims like, "I'm the healthiest person in the history of the world," can't possibly live up to that. People who don't even make the claim always fall short: Many experts think Teddy Roosevelt was bipolar, Reagan's second term was tainted by early Alzheimer's, George W. Bush once fell off a Segway and his own bike; and Ford's clumsiness became a national (albeit unfair) joke.