In modern society, stress has become one of the important factors affecting people's physical and mental health. Studies have found that there is a close connection between the intestinal microbiota and the brain, which is called the "gut-brain axis". More and more studies have shown that specific probiotic strains have the potential to relieve stress, improve mood and enhance mental health. Among them, one of the most effective probiotics widely recognized for reducing stress is Lactobacillus paracasei and Lactobacillus rhamnosus GG.
Taking **Lactobacillus rhamnosus GG (LGG for short)** as an example, many studies have shown that this probiotic has a positive effect on regulating emotions and relieving psychological stress. In animal experiments and human trials, LGG has shown the potential to affect brain neural activity. One of its main mechanisms of action is to reduce systemic inflammatory responses by enhancing the integrity of the intestinal barrier and reducing the entry of harmful substances into the body.
LGG can also regulate the microecological environment in the intestines, promote the growth of beneficial bacteria, and indirectly affect the balance of neurotransmitters in the brain. In particular, it can increase the expression of a neurotransmitter called **GABA (gamma-aminobutyric acid)**. GABA acts as a "brake" in the central nervous system, which can reduce nerve excitability, bring a sense of relaxation and calmness, and thus help reduce anxiety and mental tension.
In other words, LGG transmits signals through the "gut-brain axis", which not only improves the health of the intestines, but also has a positive impact on the brain's emotional regulation center, making it easier for people to cope with stress and anxiety. Therefore, LGG is regarded as one of the most promising anti-stress probiotics.
Bifidobacterium longum 1714 is another probiotic strain that has been proven to have anti-stress effects. A randomized controlled trial demonstrated that this strain can help improve memory and attention under high-stress conditions, while also reducing the secretion of cortisol-a hormone closely associated with stress.
Probiotics help the body better cope with stress by modulating the gut microbiota, promoting the growth of beneficial bacteria, and indirectly influencing brain health. It is important to note that the effects of probiotics vary by strain, so attention should be paid to the strain number when choosing a product. Additionally, only those with clinical research support should be considered. Probiotics typically need to be taken continuously for several weeks to months before noticeable effects can be observed.
Currently, specific probiotic strains such as Lactobacillus rhamnosus GG, Bifidobacterium longum 1714, and Lactobacillus helveticus R0052 have attracted increasing attention for their positive effects on stress relief and emotional regulation. These strains have shown potential in supporting mental well-being in various clinical and experimental studies, making them promising choices among anti-stress probiotics.
However, due to individual differences in physical condition and gut microbiome composition, the same probiotic may have different effects from person to person. Therefore, it is recommended to consult with a doctor or nutritionist before starting any probiotic regimen. Evaluating one's health condition can help in selecting the most suitable strain and dosage. A scientific and personalized approach is essential to fully benefit from the stress-relieving and mood-enhancing effects of probiotics.