I also have my doubts after using kefir. I have been using commercial Goat’s milk kefir that only contains 5 grams of sugar. It def helped me digest better, but it also seemed as if my candida symptoms started to get worse slowly. I have currently stopped using it and am going to try to make my own kefir. If I have the same reaction than I know I shouldn’t use it until later on. Once I have controlled the candida I should be able to use it to keep them away!