Lactobacillus brevis is a beneficial probiotic bacterium that plays a role in human health. Probiotics are live microorganisms, often bacteria, that offer health advantages when consumed. This bacterium is a naturally occurring resident in various parts of the human body and is also found in a range of fermented foods.
Where Lactobacillus Brevis is Found
Lactobacillus brevis naturally inhabits several areas of the human body, including the gut, oral cavity, and vagina. Newborns may receive this bacterium from their mothers through natural childbirth or breastfeeding, which helps protect the baby’s gut from pathogens and supports digestion.
Beyond the human body, Lactobacillus brevis is widely present in fermented foods and beverages. It is a common lactic acid bacterium found in products like sauerkraut, pickles, sourdough, and some fermented dairy items such as yogurt and kefir. During fermentation, Lactobacillus brevis contributes to the production of lactic acid, acetic acid, and carbon dioxide, which preserves food and gives it distinct flavors and textures.
Prominent Health Benefits
Digestive System Harmony
Lactobacillus brevis contributes to a balanced gut microbiome, a community of microorganisms in the digestive tract. This bacterium lowers the pH in the gut, creating an environment less hospitable for harmful bacteria. It survives passage through the gastrointestinal tract, allowing it to exert beneficial effects. Some studies indicate that Lactobacillus brevis may help alleviate common digestive discomforts like bloating and diarrhea. It may also support the integrity of the intestinal barrier, a protective layer in the gut.
Lactobacillus brevis has been investigated for its potential to combat gastric ulcers by inhibiting Helicobacter pylori, a bacterium often associated with ulcer development. It can reduce signs of infection in the gastric mucosa and may lessen side effects linked to traditional H. pylori treatments. This bacterium may also play a role in reducing inflammation within the digestive system, benefiting conditions like Irritable Bowel Disease (IBD) and Irritable Bowel Syndrome (IBS), potentially reducing symptoms such as abdominal pain and improving bowel movement frequency.
Immune System Fortification
Lactobacillus brevis interacts with the immune system, potentially strengthening the body’s natural defenses. It can enhance the activity of natural killer cells, white blood cells that fight infections and abnormal cells. This bacterium also exhibits antimicrobial properties, helping to combat harmful bacteria in the gut and maintain a balanced environment.
Lactobacillus brevis can increase the production of specific immune-signaling molecules, such as tumor necrosis factor-alpha (TNF-α) and interleukins (IL-1β, IL-6). These molecules play roles in initiating and regulating immune responses. The bacterium can also enhance phagocytic activity, where immune cells engulf and clear foreign particles.
Oral Cavity Wellness
Lactobacillus brevis benefits oral health. It can help maintain a balanced oral microbiome, contributing to healthy gums and potentially reducing the risk of cavities. This probiotic may work by antagonizing pathogenic bacteria in the mouth and influencing inflammatory responses.
Lactobacillus brevis can protect dental enamel from demineralization, which can lead to cavities. It may also help reduce inflammation in the gums, associated with conditions like gingivitis and periodontitis. This bacterium can contribute to combating bad breath by maintaining a healthy bacterial balance in the oral cavity.
Nutrient Utilization and Antioxidant Activity
Lactobacillus brevis contributes to the absorption of certain nutrients. Probiotics, including L. brevis, can help the body break down food and absorb nutrients more effectively. This leads to better utilization of consumed food.
Lactobacillus brevis can produce compounds with antioxidant properties. Antioxidants help protect cells from damage caused by unstable molecules called free radicals. Specific strains of Lactobacillus brevis demonstrate significant antioxidant activity, including scavenging free radicals and inhibiting lipid peroxidation.
Incorporating Lactobacillus Brevis into Your Lifestyle
Increasing your intake of Lactobacillus brevis is primarily achieved through dietary choices including fermented foods. Sauerkraut, made from fermented cabbage, is a well-known source. Pickles fermented naturally without vinegar also contain this bacterium.
Other fermented foods that may contain Lactobacillus brevis include certain types of sourdough bread and some fermented dairy products like yogurt and kefir that explicitly state “live and active cultures” on their labels. Incorporating these foods into daily meals, such as adding sauerkraut to sandwiches or consuming fermented pickles as a snack, can boost your intake. While whole food sources are encouraged, Lactobacillus brevis is also available in probiotic supplements. When considering supplements, a gradual introduction is often suggested, especially for individuals with sensitive digestive systems, to monitor the body’s response.