03/18/2026
Kimchi, sauerkraut, and other naturally fermented foods contain live lactobacillus bacteria that can survive stomach acid and colonize your intestine. A 2021 Stanford study found that just 10 weeks of increased fermented food consumption significantly boosted gut microbiome diversity and lowered 19 inflammatory markers. Unlike probiotic supplements, fermented foods provide bacteria in a food matrix that protects them during digestion. The cheapest jar of sauerkraut may outperform the most expensive probiotic pill.