The Times Magazine had two good articles this weekend about health.
Here's one supporting the "hygiene hypothesis," reintroducing intestinal worms into the body to cure Crohn's, hay fever, and M.S.:
"The Worm Turns"
Another one talking about the illusion that we can have control over our health by controlling "stress," and how cultural ideas of what makes a person "well" or "unwell" are used to explain cancer:
"Stress Test" by Peggy Orenstein (I've read one of her books in a sociology class before, so I'm rather biased towards her work)