I'm a scientist. My degree is in Molecular Biology. Those two things are somewhat related, but there's nothing that says I could have a degree, but not the heart of a scientis... and no reason that non-degreed folks can't understand, follow and practice science. I was a scientist before I ever had my degree. (I'm rather anti-credential, as I find most of them are about as valuable as your standard high school diploma.) I'm also a skeptic.
I adore the Junk Food Science blog, and today there's an amazing (caution: long!) post today outlining some of the history of "alternative medicine" and it's current growth and how some of us feel about it.