06/06/2026
I went to Hay-on-Wye Festival recently to listen to Professor Tim Spector .spector talking about fermentation and the research scientists are doing around it.
We’re learning that fermented foods may influence much more than digestion. Scientists are now exploring the connection between the gut and the brain, and how the microbes living in our gut communicate with other parts of the body.
Our gut is constantly sending signals to our brain, which is why researchers are becoming increasingly interested in the role food may play in our overall wellbeing, mood and mental health.
What we feed our bodies matters 💚
I know that I feel better when I make fermented foods part of my daily diet.
The good news is that there is so much choice. Kefir, natural yoghurt, artisan cheese, kimchi, sauerkraut, lacto-fermented cucumbers (my favourite Polish ogórki kiszone), kvass, water kefir, and of course, kombucha.
These traditional foods have been around for generations, and it’s fantastic to see more people discovering them again.
If you do buy fermented foods, try to look for raw, unpasteurised products made with good-quality ingredients, and support local producers where you can. It all matters.
You don’t have to change everything.
Start with one spoonful.