Share on Pinterest Foods such as yogurt and kefir contain Lactobacillus bacteria. Claudia Totir/Getty Images In new research, published in Brain, Behaviour and Immunity, researchers have described the ...

Nottingham Trent University provides funding as a member of The Conversation UK. Fermentation, one of the oldest food production and preservation techniques, has seen a huge revival in recent years.

Probiotics are an umbrella term for the live microorganisms that we consume that will eventually flourish in our gut. Common sources include yogurt, fermented pickles, and kimchi. Within these foods, ...