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Published on: January 9, 2026
Intestinal microbiota during early life - impact on health and disease
Lotta Nylund1, Reetta Satokari1, Seppo Salminen1
1Functional Foods Forum,University of Turku,Turku,Finland.
Insights
The early gut microbiome rapidly develops after birth, influenced by lifestyle and medical factors. Understanding these early influences is crucial for long-term health outcomes.
Area of Science:
- Microbiology
- Pediatrics
- Immunology
Background:
- The infant intestinal microbiota undergoes rapid development in early life, contrasting with its stability in adults.
- Early-life microbial colonization is influenced by various lifestyle factors and medical interventions.
- The host plays a significant role in the microbial colonization process.
Purpose of the Study:
- To examine the impact of early-life factors on intestinal microbiota development and subsequent health.
- To provide an overview of microbial colonization steps and host involvement.
- To discuss emerging early biomarkers linking microbiota to health outcomes.
Main Methods:
- Literature review and synthesis of existing research on early-life microbiota.
- Analysis of factors influencing microbial colonization.
- Discussion of specific examples of microbiota associations with health conditions.
Main Results:
- Early-life factors significantly shape the developing gut microbiota.
- Specific associations identified include microbiota and atopic diseases, colic and early development, and antibiotic use impacts.
- The host's role in microbial colonization is integral to development.
Conclusions:
- Early-life microbiota development is dynamic and influenced by external factors.
- Further clinical studies are needed to fully elucidate the long-term health implications of early-life microbiota.
- Identifying early biomarkers is key to understanding microbiota-mediated health and disease.
Abstract:
In the first years after birth, the intestinal microbiota develops rapidly both in diversity and complexity while being relatively stable in healthy adults. Different life-style-related factors as well as medical practices have an influence on the early-life intestinal colonisation. We address the impact of some of these factors on the consecutive microbiota development and later health. An overview is presented of the microbial colonisation steps and the role of the host in that process. Moreover, new early biomarkers are discussed with examples that include the association of microbiota and atopic diseases, the correlation of colic and early development and the impact of the use of antibiotics in early life. Our understanding of the development and function of the intestinal microbiota is constantly improving but the long-term influence of early-life microbiota on later life health deserves careful clinical studies.
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