Microbiome research in India

Reviewed by Dr. Nikita Dinger, Founder & CEO, BioMeBar. Last reviewed 7 October 2026.

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Research on the Indian gut microbiome is young but growing. The main message so far is that Indian guts tend to look different from the Western cohorts that dominate reference datasets, with more Prevotella and a different mix of fibre-fermenting bacteria. Studies are still small relative to India’s size and diversity, so most findings are best read as early maps, not final answers.

Why India needs its own data

Much of what is known about the human gut microbiome comes from North America and Europe. The Human Microbiome Project (2012) was a landmark, but it sampled a limited population. Work comparing people across countries, such as Yatsunenko and colleagues (2012), showed that gut communities vary with geography, age and lifestyle. If a country’s population is missing from the reference, “normal” for that country is unknown.

What has been found so far

The best-known paper is Dhakan and colleagues (2019, GigaScience), which described the gut microbiome, gene catalogue and metabolites of an Indian cohort. It reported features that differ from many Western and some other Asian cohorts, including a strong presence of Prevotella and a distinctive set of genes. The study also reflected that diet and region shape results.

Other Indian groups have looked at conditions such as type 2 diabetes, tribal and rural versus urban communities, and early-life patterns. Results have varied in method and size, so they are not always directly comparable.

What drives the differences

• Diet: cereal, millet, pulse and vegetable-heavy diets supply a lot of fermentable fibre. Long-term diet is linked to which bacterial groups dominate (Wu et al., 2011).
• Region and community: north, south, coastal, hill and tribal populations do not eat or live the same way.
• Environment: sanitation, infections, antibiotic access and urbanisation all differ.
• Genetics: likely a smaller factor than diet and environment, though still being studied.

What it does not yet tell us

It is easy to over-read early work. Here is where the evidence stops.

• No agreed definition of a healthy Indian microbiome exists yet.
• Many studies sample cities, with fewer from villages, different states and age groups.
• Sequencing and analysis methods differ between labs.
• Observational links between microbes and conditions do not show cause.
• Whether tailoring a probiotic or prebiotic to Indian gut patterns improves outcomes needs well-designed trials.

What this means for you

If you have had a gut test, ask which reference group your results were compared against. A pattern called unusual in one dataset may be ordinary in an Indian one. If you are choosing a supplement, product claims that rest on Western trial populations may not fully apply, and Indian trials are still limited.

Research in India also depends on people sharing samples and details about diet. Taking part in properly consented studies, run with ethics approval, is one way the evidence base grows.

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Why local data matters to personalisation

BioMeBar is a personalised synbiotic company led by microbiome researcher Nikita Dinger, PhD. Any personalised approach is only as good as the reference data behind it, and if reference patterns do not fit Indian guts, personalisation built on them may miss. For published work and research collaborations, see the research papers and clinical evidence pages instead of relying on a summary here.

Common questions

Is the Indian microbiome “better” or “worse”?

Neither. Different is not the same as healthier or less healthy. Communities reflect diet and environment.

Can I compare my result to the Dhakan study?

Only loosely. One person’s sample cannot be matched to a cohort average, and methods differ.

Will research change what a good diet looks like?

It may refine advice, but the core messages, such as varied plant foods and fibre, are consistent across studies.

What good research here would look like

The next stage needs larger and more varied cohorts, with samples taken the same way and diet recorded in detail. Following the same people over time would show how stable a gut community is across seasons and life events. Trials of diet and supplements in Indian participants, with clear outcomes set in advance, would tell us far more than comparisons of single snapshots. Open sharing of methods and data, with ethics approval and participant consent, would let other groups check and build on the work.

Reading headlines with care

Microbiome stories travel fast, and “scientists find” often hides a small, single-site study. Ask how many people took part, whether the finding was repeated elsewhere, and whether the claim goes beyond association. A single paper, however well done, is a prompt for more work rather than a final answer.

Related reading

• The Indian gut microbiome
• The Gut Atlas Project
• Research papers
• Prevotella explained

Sources

• Human Microbiome Project Consortium (2012). Structure, function and diversity of the healthy human microbiome. Nature.
• Yatsunenko T, et al. (2012). Human gut microbiome viewed across age and geography. Nature.
• Wu GD, et al. (2011). Linking long-term dietary patterns with gut microbial enterotypes. Science.
• Dhakan DB, et al. (2019). The unique composition of Indian gut microbiome, gene catalogue, and associated fecal metabolome deciphered using multi-omics approaches. GigaScience.

Talk to us

If you would like to know whether BioMeBar can support you, message us on WhatsApp. Tell us your symptoms and your pincode and we will take it from there. Not sure where to start? Take the free gut assessment, which takes about three minutes.

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BioMeBar provides nutrition and gut health guidance and does not replace medical care. See a doctor for severe, persistent or worrying symptoms.