Envbiotics-Front. Med. 2026

### What Are Envbiotics?

Envbiotics is a term that encapsulates the idea of regulating and optimising gut microbiota indirectly by focusing on the environmental conditions of the gut rather than directly modifying microbial populations or supplying nutrients. Unlike prebiotics, which act as substrates for gut microbes, or postbiotics, which focus on metabolic by-products of microbes, Envbiotics emphasises non-nutritional factors that shape the gut microenvironment. These factors include:

1. **Physicochemical Conditions**:

• Intestinal acidity
• Oxidation-reduction potential
• Osmotic balance
• Temperature
• Ion concentrations
• Bile salts
• Short-chain fatty acids

2. **Spatial Factors**:

• The arrangement and integrity of the intestinal mucosal layer
• The volume and composition of host mucus secretion

3. **Biological Markers**:

• Levels of antimicrobial peptides
• Immune cell functions
• Presence of other symbiotic organisms

### Why Envbiotics Are Important

The concept of Envbiotics addresses limitations in the current understanding of gut microbiota modulation. While prebiotics and postbiotics focus on nutrient-based or microbial by-product-based interventions, they often neglect the role of the gut's environmental conditions in shaping microbial behaviour. Envbiotics fills this gap by recognising that non-nutritional factors can profoundly influence the survival, colonisation, and function of gut microbes.

### Key Research Supporting Envbiotics

1. **Medications and Gut Microbiota**:

Studies have shown that common medications, such as antidepressants, antipsychotics, and beta-blockers, can significantly alter gut microbiota by affecting the host's physiological state, even though these drugs are not directly metabolized by the microbes.

2. **Host-Microbe Interactions**:

Host-derived factors such as mucin (e.g., MUC2) and proteins like FABP2 play critical roles in shaping microbial communities. For instance, disruptions in mucin production can lead to increased intestinal permeability and dysbiosis.

3. **Non-Nutritional Interventions**:

• Acupuncture has been shown to regulate vagal activity, thereby influencing gut microbiota indirectly by modulating host immune status and digestive gland function.
• Composite formulations like xyloglucan and pea protein have been reported to enhance intestinal barrier function and regulate microbiota homeostasis by forming a mechanical barrier in the mucosal layer.

4. **Biological Compounds**:

• Pyrroloquinoline quinone (PQQ), a redox enzyme cofactor, selectively enriches beneficial bacteria by modulating the host's immune system and gut microenvironment, rather than acting directly on microbial populations.
• Exosomes and vesicle-like components derived from plants or other sources influence gut microbiota indirectly by modulating host immune responses.

### Envbiotics as a Future Research Direction

The concept of Envbiotics represents a paradigm shift in gut microbiota research and therapeutic approaches. By focusing on the environmental conditions critical for microbial survival and performance, Envbiotics offers a more holistic framework for understanding and optimizing host-microbe interactions. This approach could lead to:

• Improved strategies for restoring gut microbiota balance in conditions like colitis, Crohn's disease, and dysbiosis.
• Development of non-pharmaceutical interventions that enhance host health by optimizing the gut microenvironment.
• A better understanding of how non-nutritional factors, such as stress, immune status, and external interventions, influence gut microbiota.

### Conclusion

It highlights the importance of environmental modulation as a distinct pathway for regulating microbial communities and improving host health. If new developments in Envbiotics are published in 2026, they are likely to build on the foundational principles outlined here, offering deeper insights into the interplay between the gut microenvironment and microbiota.