I'm a big advocate for naturally fermented foods. Prior to my diagnosis I made my own yogurt, apple cider vinegar and sauerkraut. The whole family enjoyed them, especially the yogurt. You can control the amount of sugar you add, and the tanginess depending on how long you ferment it. I would use the yogurt to make smoothies every morning, adding kale, beets, frozen bananas and berries. You need a pretty powerful blender, but the results are delicious. Something in the concoction, possibly the kale, also lowered my cholesterol level quite a bit. Of course, it didn't prevent RC, butt does improve digestion.
female, diagnosed Jan 14, RC stage 2a, age 56
April 14, 28 chemo/rad with Xeloda
June 14 adjuvant Xeloda 6 rounds