| Summary: | Abstract The science of Ayurveda with its strong and unique fundamentals holds its domain forever amidst all scientific and medical advancements. The concept of Shadkriyakala (the different phases of disease formation) holds relevance in preventive medicine and public health management as it provides ample chance to halt the disease process at each stage by timely intervention. In this review, we would like to bring to the limelight the relevance of Ritucharya (seasonal regimen) in primary prevention by modulating the gut microbiota. The modern gut microbiome researches now help us to better explore the Ayurveda theories of Agni (digestive fire) and Ama (metabolic toxins) preached centuries back. Ayurveda firmly proclaims that no disease ever arises without the derangement of Agni (digestive fire). The whole preventive and treatment methodology in Ayurveda focuses upon the modulation and management of “Agni” (digestive fire). When the functioning of Agni is deranged, Ama (metabolic toxin) is produced and it vitiates the doshas which spread throughout the body and manifest as varied diseases. A biomedical perspective of our reviews suggests that dysbiosis of microbial flora can cause a leaky gut by which the toxins of deranged digestive metabolism enter the bloodstream. Consequently, an inflammatory response occurs within the body which expresses out as diseases opportunistically. We meticulously reviewed the influence of extrinsic factors namely diet and climate on human gut microbiota, and our analysis emphasises the application prospects of Ritucharya (seasonal regimen), in regulating the dynamic host-microbe interaction.
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