I've never had to be tested for any of those things in 35 years, because I'm not the size of a Chevy Tahoe.  The only time I've had any blood work done was when I was pregnant (they run a lot of tests when you're pregnant).  And the only doctor I've seen has been my gyno, and that's only for the routine exam you have to do every year or two. I'm 39 years old.