Great article about fermented sauerkraut!
Just as an aside--through GAPS I've learned that sometimes acid reflux is a problem of too little stomach acid vs. too much! That has proven true in our 2 dds with gut issues. My 14 yodd has received some benefits from this way of eating, but still had some chest heaviness (her sign of acid reflux--she doesn't have hardly any of the other "usual" signs!).
By eating just a TB or so of fermented sauerkraut, about 15 minutes before eating, it is much better!
GREAT stuff! (Just make sure it's truly fermented, not just mixed with vinegar and sugar!)
There are other fermented veggies that are good, too!