Gut First Science
Verified by your gut
Food is input. The microbiome is output.
We grade food by what it does inside the body — not by what it claims outside.
The Damage Is Happening
Ultra-processed food has degraded microbial diversity across urban India faster than the microbiome can adapt.
Emulsifiers thin the gut's mucus layer. Preservatives suppress entire bacterial guilds. Refined carbohydrates starve the bacteria the gut wall depends on.
Reduced diversity is not the marker of any one condition. It is the upstream risk factor for most of them.
The Gut-Brain Axis
Approximately 90% of the body's serotonin is produced in the gut, regulated by microbial composition.
The gut produces GABA, dopamine precursors, and short-chain fatty acids that cross the blood-brain barrier.
A diet that disrupts microbial diversity does not only affect digestion. It affects cognition, mood, and sleep.
Four Microbial Guilds
The microbiome operates as four interdependent guilds. Every Gudbelly product is designed to feed all four.
Vitamin Synthesisers
Produce B vitamins and K2. Essential for energy metabolism and cardiovascular function.
Neurotransmitter Producers
Regulate serotonin, GABA, mood, sleep. The gut-brain connection is not metaphorical — it is biochemical.
Protein Metabolisers
Convert dietary protein into amino acids. Without this guild, protein quality is irrelevant.
Fibre Fermenters
Produce butyrate, the primary fuel for gut wall cells. We include inulin, resistant starch, and fermentable fibres in our products specifically to feed this guild. Architecture, not additives.
Live Cultures — Or No Claim
Pasteurised kombucha is flavoured vinegar water. Every fermented product on Gudbelly is unpasteurised, with a verified live culture count at delivery.
The Gudbelly Engine
Your microbiome profile becomes the input to your basket.
Our system maps every product on Gudbelly to your gut diversity, inflammation markers, and health goals — returning a personalised list of what your body, today, will absorb, ferment, and benefit from.
Method
16S + shotgun sequencing
Window
7-day collection kit
Output
Diversity · Inflammation · Guild composition
Loop
Profile → match → 90-day re-test
The gut is the verdict. Everything else is opinion.
Shop Lab-Verified Products