Thu May 08 00:00:00 UTC 2025: ## Climate Change Threatens Gut Microbiota, Exacerbating Health Risks: Study

**Bengaluru, India (May 8, 2025)** – A new review article published in *The Lancet Planetary Health* reveals a concerning link between climate change, food shortages, and the human gut microbiome. The study warns that climate-driven changes in food production and quality could disrupt the diversity of gut microbes, leading to malnutrition and increased susceptibility to disease.

The research highlights that climate change impacts, such as reduced crop yields and nutritional value, will disproportionately affect low- and middle-income countries (LMICs) already struggling with food insecurity. Indigenous communities, who often rely on local food sources and possess greater gut microbial diversity, are particularly vulnerable. The study also points to the increased prevalence of foodborne and waterborne illnesses in warmer weather as a contributing factor.

Researchers from the Indian Institute of Public Health, Gandhinagar, have corroborated these findings, noting a correlation between rising temperatures and increased reports of malnutrition and infectious diseases in India. While the direct effects of altered diet on gut microbiota are evident, the study also acknowledges the indirect impacts of climate change on water, soil, and environmental microbiota.

Experts emphasize that the complex interplay of factors makes it difficult to establish direct cause-and-effect relationships. Multiple stressors, including temperature, pollution, and lack of access to quality food and water, simultaneously disrupt gut microbial balance in vulnerable populations.

The disruption of gut microbiota, or dysbiosis, is not merely a shift in microbial populations but also a loss of interdependence among beneficial strains, impacting vital metabolic functions. Further research is crucial to understand these complex interactions and develop effective mitigation strategies. While challenges remain, including a lack of funding for interdisciplinary research, advancements in computational biology and metagenomics offer hope for unlocking the secrets of the gut microbiome and developing targeted therapeutic approaches. The creation of open-access databases like GutBugBD, developed by researchers at the Indian Institute of Science Education and Research, Bhopal, represents a step towards this goal.

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