Health & Fermentation

Probiotics vs postbiotics: what fermentation changes in food, what pasteurization does to a ferment, and what the research does and does not support.

A science-based guide to the best probiotic foods, with CFU comparisons, Korean fermented foods, and how to tell if a product still has live cultures.

Fermented foods have a reputation problem. The wellness industry overpromises, and the science community stays cautious. The truth sits in between: there is real research on Korean fermented foods, but it is thinner and more mixed than the marketing suggests. Let’s talk about what we actually know. The Gut Microbiome Story Is Real, But Complicated…

If you have searched for information about diabetes and diet, you have probably come across claims about fermented foods. Kimchi lowers blood sugar. Sauerkraut is good for diabetics. Fermented foods fix insulin resistance. The reality is more complicated than the headlines suggest — but also more interesting. There is real scientific research on fermented foods…

What a daily bowl of doenjang soup can and cannot do: the fermentation compounds, the limits of the evidence, sodium, and a simple recipe.

Korean households have long passed down the same advice: eat doenjang and your stomach settles, eat kimchi regularly and your skin clears up. That is folk wisdom, and it is worth separating from what research shows. Researchers do study a gut-skin axis, the idea that the gut and its microbes can influence skin through the…

Can kimchi help with weight loss? What the research shows on probiotics, capsaicin, fiber and sodium, and what we can and cannot say.

A spoonful of doenjang is the end point of a long transformation: soybeans broken down by microbes into something with a very different chemistry. Doenjang is often sold as “immune-boosting.” This article looks at what fermentation actually produces in doenjang, what the immune research is based on, and where the evidence stops. A Long History…

Many people say probiotics are good for you. But ask someone exactly why, and the answer gets fuzzy fast. “Good for your gut,” they’ll say. “Helps your immune system, maybe.” This article looks at what the live microbes in fermented foods may do in the gut, and where the evidence is still thin. Your Gut…