Urban food habits rewriting gut microbiome in India, says study
Researchers report the first South Asia gut microbiome reference database and link urban diet processing differences to microbiome shifts associated with obesity, raised blood glucose, and hypertension.
- Gut microbiome means gut bacteria and other microbes inside the intestine that can affect digestion and metabolism.
- Processed-food intake and lower fibre intake can change gut bacteria balance, which may shift blood-sugar control and weight-related health risk.
- The study compares rural/foraging or early-agricultural groups with city-migrant groups who consume more processed foods.
- Genome sequencing helps check that compared groups are genetically similar, so differences can be blamed more on environment than genes.
What happened: South Asia gut microbiome reference database and rural–urban comparisons
A research team reports building the first reference database of gut microbiome profiles across South Asia. The team sampled 575 adults from 10 communities in India and Sri Lanka and compared gut microbiome patterns across different lifestyles.
The research design compares remote/foraging or early-agricultural communities with relatives who migrated to cities and consumed more processed foods. To reduce the influence of inherited differences, the team verifies genetic similarity using genome sequencing, supporting an interpretation focused on environmental factors such as diet and food processing.
UPSC may frame this study as evidence building: population-level gut microbiome reference baselines across South Asia, followed by diet–microbe links mapped to obesity, diabetes risk via raised blood glucose, and hypertension.
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