The Gut: The Body’s Second Brain
Did you know? The gut has its own independent "enteric nervous system" (ENS), containing an estimated 200 to 500 million nerve cells—second only to the brain. This is why the gut is often referred to as the body’s “second brain.” It regulates intestinal movement and secretion, supports digestion and absorption, and plays a vital role in overall health.

The gut and brain stay in constant two-way communication through the “gut–brain axis,” which involves neural, immune, and endocrine pathways. When emotions affect appetite, or when stress leads to digestive discomfort, these are clear signs of the gut and brain working in close connection.

In addition, the gut is considered the largest immune organ in the body. The gut microbiota works hand in hand with the enteric nervous system to support digestion and immune function. Research also indicates that the gut can produce neurotransmitters such as serotonin, which may be linked to emotional regulation and overall well-being.
 

In 2001, the World Health Organization (WHO) and the Food and Agriculture Organization (FAO) of the United Nations defined probiotics as “live microorganisms which, when administered in adequate amounts, confer a health benefit on the host.”

Evaluating the true efficacy of probiotics requires comprehensive analysis of the gastrointestinal environment, rigorous experimental research, and well-designed clinical trials. The publication of research findings is also crucial. Only after completing these stringent steps can probiotics proceed to commercial production and application.

At Glac Biotech, we are committed to ensuring the safety, stability, and high quality of our probiotic and postbiotic raw materials and products. Through rigorous scientific validation—including precise strain identification and in-depth analysis of microbial nutrition and physiological characteristics—we guarantee the integrity and effectiveness of every product. These high standards reflect our strong commitment to quality and science.

📚 References

1. Nature Reviews Gastroenterology & Hepatology. 2020 Jun; 17(6): 338–351.

2. Nature Reviews Neuroscience. 2011 Jul 13; 12(8): 10.1038/nrn3071.

3. Multiple Sclerosis and Neuroimmunology. Vol. 12, 2021.

4. Integrative Medicine (Encinitas). 2018 Aug; 17(4): 28–32.

5. International Probiotics Association (IPA).