Do fermented foods live up to the hype?

Fermented foods and drinks such as kimchi, kombucha, and tempeh are increasingly popular, adding to mainstays such as yogurt, sauerkraut, and beer. Heat and bright lights during manufacturing can destroy some beneficial probiotics. Fermented products can ease digestion, dampen inflammation, boost nutrient absorption, and battle harmful bacteria. People should look for product labels that say “live and active cultures” and avoid shelf-stable versions, which don’t contain probiotics.