Every morning I do a green smoothie, but one of the most important ingredients is the kefir I add for the pro-biotics. I also drink a dilluted shot of apple cider vinegar in the morning.
I have been doing smoothies or a few years now and my digestion is the best it has been in my life and I rarely get sick (actually I don't recall the last time I had the flu or even a cold really.)
I have been reading more and more as well of the connection between mental health and the gut biome. Very cool stuff and thanks for sharing!