@MissA I’m pretty sure it’s a standard AA slogan and if you google “you’re only as sick as your secrets” with the quotes, you’re going to get a whole lot of hits regarding AA, 12 Step Programs and recovery programs. But I have yet to find any indication of who actually said it first, anyone willing to attribute the quote to a particular person or a particular source. But I could certainly be wrong, as I often am, particularly because I have not been able to answer the actual question, which is “Who coined the phrase…” And I am not familiar with Brenda Shaughnessy. Who is she and when did she first used the term? And is she or has she ever been a member of the Communist Party?
Just joking on the last one, of course, I was starting to get a little bit of an interrogational tone there, I think. :-)