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Does Scientific Evidence Support Fermented Foods' Popularity?

Posted: 2026-05-01
Does Scientific Evidence Support Fermented Foods' Popularity?

What’s happening?

2026 is the year of the cabbage!  This trend is fuelled in part by claims that cabbage in its fermented form, sauerkraut and kimchi, and other fermented foods like yogurt, kefir, tempeh and some kombucha fermented teas can potentially improve digestion, immunity and possibly mood (1,2,3).

Fermented foods or beverages are “those made through desired microbial growth and enzymatic conversions of food components” (3). They have been around for thousands of years (e.g. bread,...

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