Probiotics are live microorganisms, typically bacteria or yeasts, that offer a health benefit when administered in adequate amounts. These beneficial microbes contribute to the balance of the gut microbiota. Lactobacillus gasseri is a naturally occurring strain found in the human gastrointestinal and urogenital tracts. This specific strain is often included in supplements because research suggests it supports certain health goals beyond general gut health.
Specific Health Applications of Lactobacillus gasseri
Lactobacillus gasseri is recognized for its influence on metabolic function and body composition. Clinical trials have explored its ability to reduce visceral fat, the fat stored deep within the abdominal cavity. This effect occurs through the suppression of lipid absorption and the modulation of signaling pathways that regulate fat storage. One study showed that certain strains of L. gasseri resulted in a measurable reduction in abdominal fat area after 12 weeks of consistent use.
The strain also plays a significant role in maintaining a healthy environment in the female urogenital tract. As a natural part of the vaginal flora, L. gasseri helps maintain a low pH, which is inhospitable to many common pathogens. By producing lactic acid, it helps protect against the overgrowth of organisms like Candida albicans and Gardnerella vaginalis. It also supports digestive balance by competing with harmful bacteria and contributing to the integrity of the intestinal barrier.
Identifying High-Potency Probiotic Supplements
Finding a probiotic with the most Lactobacillus gasseri requires careful label scrutiny beyond the total Colony Forming Units (CFUs). The total CFU count represents the sum of all live organisms, which can be misleading in multi-strain products. To maximize the concentration of L. gasseri, look for a single-strain formulation or one where L. gasseri is the primary organism listed.
The strain designation is more important than the CFU number alone, as benefits are strain-specific. Look for the full scientific name followed by a specific alphanumeric code, like BNR17 or SBT2055, as these are the strains most studied for metabolic effects. An effective daily dosage for measurable effects is often in the range of 1 billion to 10 billion CFUs. Some high-potency single-strain supplements may offer up to 50 billion CFUs of L. gasseri per serving.
Quality Control and Effective Dosing
The potency of a probiotic is only meaningful if the bacteria remain alive and are delivered effectively to the gut. A crucial quality indicator is a label guarantee that states the CFU count is maintained until the product’s expiration date, not just at the time of manufacture. Because L. gasseri must survive the highly acidic environment of the stomach, the formulation’s delivery system is a significant factor in its efficacy.
Products that utilize delayed-release capsules or enteric coatings are designed to protect the live bacteria during gastric transit. Proper storage also impacts viability; some high-potency strains require refrigeration, while others are formulated to be shelf-stable. Third-party testing helps confirm that the supplement contains the exact strain and potency listed on the label.