You have probably heard it: "acidic in the glass, alkaline in the body." The idea, often called the acid-base theory, sounds plausible: an acidic drink supposedly has an "alkaline" effect in the body. The problem is that the human body doesn't work that simply. Here is honestly what is true, what isn't, and what actually happens in kombucha. For the bigger picture, see Is kombucha healthy?

What science says

The pH of your blood is regulated very tightly, usually between 7.35 and 7.45, by the lungs, kidneys and the body's buffer systems, regardless of what you eat or drink. A healthy body cannot be made noticeably more "alkaline" or "acidic" through diet. The idea that an acidic drink has an alkaline effect and thereby eases fatigue, digestive complaints or inflammation is not scientifically proven. We say that clearly because transparency matters more to us than a line that sells well.

What actually happens in kombucha: organic acids

What really defines kombucha are the organic acids formed during fermentation. Acetic acid gives kombucha its distinctive, cider-vinegar-like sharpness and contributes to its keeping quality. Lactic acid brings a rounder, softer acidity, as in sourdough or yoghurt. Gluconic acid contributes to a milder acid profile than acetic acid alone.

These acids shape flavour, mouthfeel and freshness. That is a statement about chemistry and taste, not about a health effect in the body.

A fermented drink in a bigger picture

A balanced lifestyle isn't built on a single drink. Vegetables, fruit, water, movement and sleep are what make a difference. Kombucha can be part of a mindful way of eating simply because it is a flavourful, lower-sugar alternative to soft drinks, not because it "de-acidifies" the body.

Ideas for pairing PROXY and kombucha with food are in our pairing guide.

About the author

Larissa works as a holistic nutritionist and is the founder of enni inni. She helps people find their individual path to a sustainably healthy lifestyle. Alongside one-on-one consultations, she offers workshops for businesses and teams and regularly leads meditation sessions.

Free introductory call: hello@enni-inni.de or on Instagram: enni.inni
More information: www.enni-inni.de