I too was wondering what Dr., O's answer to this is.
I recently bought a Kangen filter and began drinking alkaline water. My gluten sensitivity has also created a systemic yeast infection. I heard that yeast thrive in acidic water and that alkaline water will help to kill the overgrowth of yeast. I am also taking InstestiNew, a product with taurine to help my leaky gut to heal. I believe the hyphae of the yeast have helped to create my leaky gut problem. Before Kangen I was drinking reverse osmosis filtered water, which I have learned is acidic pH 5. I believe the Kangen water will help me.
I can't comment on the alkaline water, but I had to chime in here at the mention of Intestinew….I was told that contains grains and should be avoided if you're trying to follow the grain free diet. I ended up and still am using l-glutamine powder instead.