"Humans did not invent or create fermentation; it would be more accurate to state that fermentation created us."
-Sandor Ellix Katz, The Art of Fermentation, page 1
Fermented foods like sauerkraut, kimchi, pickles, and yogurt have so many health benefits. They support the healthy microorganisms in our digestive tract that we can't live without and they improve our ability to digest food and absorb nutrients.
If fermenting your own foods is daunting, take some help from these two books.