Huh, maybe I'll reconsider my kefir and yogurt habit. I have been having a cup of kefir every morning because of its purported health effects, and occasionally I add yogurt to the mix. I haven't seen any downsides, but I haven't been doing it that long, so if it only becomes a problem when it accumulates, I'll just reduce how much I consume.

I guess I need to find a replacement with a reasonably high amount of protein (I've been using it as a pre-workout drink). I'm hoping I can fit lentils in there somewhere.

It seems that one serving a day of yogurt is probably fine, but two a day (about what I have been having) is probably bad long-term. I'll probably continue having yogurt, but I'll only have it once a day and get my protein elsewhere.