Let me just say this -

On the advice of the acupuncture guy that I stopped going to because he wasn't helping with my back pain, I have been having a daily bit of apple vinegar in a cup of cranapple juice, because both he and my regular doctor told me it aids digestion. It should be noted that I have not had an acid flareup since, not even during Comicon, when I had the usual deadly booze/adrenaline combo going, and I was eating quite badly.
Huh.