Help! There's an Epidemic of Anxiety! (Part II)

In my last-post-but-one I slammed the claim that the British are suffering from an epidemic of anxiety disorders. I declared it a myth pushed by the Mental Health Foundation and echoed uncritically by British newspapers (although The Economist has since run a kind-of skeptical piece on it.) But I also promised that there are important lessons to be learned here. So, here we go: