Gut microbiome, gut function, and probiotics: Implications for health.

Area of Science:

• Microbiome research
• Host-microbe interactions
• Gut health

Background:

• The human body harbors a vast and diverse microbial community, particularly in the gut, known as the gut microbiota.
• Recent advancements, especially metagenomics, have revealed the profound influence of the gut microbiota on host physiology, including digestive, immune, and neuroendocrine systems.
• Alterations in gut microbiota composition are increasingly linked to various gastrointestinal and extraintestinal diseases.

Purpose of the Study:

• To explore the complex interplay between host and microbe within the human body.
• To highlight the role of the gut microbiota in maintaining host health and its association with disease.
• To review the therapeutic potential of probiotics in managing microbiota-related disorders.

Main Methods:

• Utilized metagenomic approaches to analyze microbial diversity.
• Reviewed evidence linking gut microbiota to various health conditions.
• Examined the mechanisms and efficacy of probiotics through intervention trials, systematic reviews, and meta-analyses.

Main Results:

• Metagenomics has revolutionized our understanding of microbial diversity, showing microbes outnumber human cells.
• Gut microbiota signals are crucial for host development and maintenance of key systems.
• Strong evidence supports probiotics' benefits in preventing and treating gastrointestinal and extraintestinal disorders.

Conclusions:

• The gut microbiota plays a critical role in host health, influencing numerous physiological processes.
• Dysbiosis of the gut microbiota is associated with a range of diseases.
• Probiotics demonstrate significant therapeutic potential for managing these conditions by positively modulating the gut microbiota and host immunity.