Science corner
Understand what’s in your jar.
Explore fermentation, live cultures and the evidence behind the claims.
This is Zoh's evidence-led resource on live fermentation cultures, strain identity, viability, testing, and what the available research can and cannot establish.
We are building this resource around primary literature, systematic reviews, product-specific technical documentation, and clearly separated fermentation guidance. We do not use unsupported medical promises or invented laboratory numbers.
Current resources
- Kefir evidence & clinician resource
- Kefir authority hub
- Kefir in India: climate & fermentation guide
- Fermentation cultures
- For practitioners & healthcare professionals
What this resource will cover
- How live-culture foods differ from isolated probiotic supplements
- How strain identity, viability, storage and fermentation conditions affect a culture
- How to interpret CFU and other laboratory measurements without overstating what they mean clinically
- India-specific research and fermentation practice
Where evidence is limited, we will say so. Where a claim depends on a specific product or culture, we will identify that limitation.
Milk kefir: start with the evidence
Learn how to read a microbial list and a health claim before exploring individual organisms.
Milk Kefir Microbes: Why There Is No Fixed Strain Count
A clear guide to bacteria, yeasts, species and strains in milk kefir, and what a microbial list can actually tell you.
Read the guide →Kefir Health Claims: How to Read the Evidence
Separate findings about fermentation from health claims, and learn what to ask before trusting a probiotic or strain-count claim.
Read the guide →Explore the article collection
Browse the existing science articles by topic. A finding about one organism or fermented food is not automatically evidence about a particular product.
Milk kefir articles Kombucha articles Gut health articles