Lifestyle-Induced Microbial Gradients: An Indian Perspective

Area of Science:

• Microbiology
• Human Ecology
• Genomics

Background:

• Urbanization is a global trend with potential health implications.
• Urban lifestyles are associated with altered human gut microbiota composition.
• Previous studies suggest links between gut microbiota and metabolic conditions in urban populations.

Purpose of the Study:

• To investigate the impact of urbanization on the human gut microbiota in an Indian context.
• To compare gut microbial communities between tribal and urban populations in India.
• To identify specific patterns and gradients in gut microbiota based on habitat and lifestyle.

Main Methods:

• Analysis of 16S rRNA sequence datasets from Indian urban and tribal gut microbiota.
• Comparison of overall community structure, resident taxa, and inferred functional components.
• Correlation of microbial data with available metadata.

Main Results:

• Urban and tribal gut microbiota exhibit distinct signatures in diversity, taxonomic, and functional composition.
• Tribal communities show significantly higher species diversity and richness than urban populations.
• Urban samples form two distinct enterotypes, with one showing microbes common to both cohorts, suggesting a transitional state.

Conclusions:

• Urban lifestyle and diet demonstrably impact gut microbial community structure and function.
• The study provides evidence for a detrimental association between urbanization and gut microbiota health.
• Distinct taxonomic and functional signatures characterize the evolutionary transition of gut microbiota from tribal to urban settings.