Bifidobacterium lactis
Bifidobacterium lactis
Snapshot
Bifidobacterium lactis is a resilient probiotic strain that supports digestion, immunity, and nutrient absorption, while promoting gut balance and reducing inflammation.
What is Bifidobacterium lactis?
Bifidobacterium lactis (also known as Bifidobacterium animalis subsp. lactis) is a beneficial probiotic species widely studied for its ability to colonize the intestines, promote healthy bowel movements, support immune function, and aid nutrient metabolism. It is especially known for surviving the digestive tract’s harsh conditions, making it a preferred strain in probiotic supplements and fortified foods.
Where It Comes From
Originally isolated from raw milk, B. lactis is now grown in controlled environments and used in many dietary supplements and probiotic-enhanced dairy products such as yogurt and kefir. It is commonly added to blends aimed at improving gut health and immune resilience.
Key Nutrients & Compounds
B. lactis produces important short-chain fatty acids like acetate and lactate, which help maintain intestinal pH and support gut barrier function. It promotes the absorption of calcium, magnesium, and B vitamins, and contributes to the synthesis of enzymes that help break down food and improve lactose digestion.
Health Benefits
B. lactis is known for supporting regular bowel movements and relieving symptoms of bloating, constipation, and diarrhea. It strengthens the gut lining, supports immune responses, and may reduce the frequency and severity of respiratory infections. It also plays a role in improving lactose tolerance and reducing systemic inflammation. Some evidence suggests it can help balance blood cholesterol levels and improve gut-brain communication.
Recommended Dosage
Effective doses typically range from 1 to 10 billion CFUs per day. For specific therapeutic uses—like IBS symptom relief or post-antibiotic recovery—higher doses may be used under clinical guidance.
How to Use It
B. lactis can be taken in capsule, tablet, powder, or functional food form. For best results, take daily on an empty stomach or as directed. Many probiotic blends include B. lactis due to its hardiness and synergy with other strains.
Who Should Use It?
Beneficial for adults, children, and seniors looking to improve digestion, support immunity, or recover from antibiotics. It is also useful for individuals with lactose intolerance, IBS, or frequent GI disturbances.
Possible Interactions or Cautions
Generally regarded as safe with no known serious interactions. However, those with immunocompromised conditions or undergoing chemotherapy should consult a healthcare provider before using probiotics. Always choose a high-quality product with guaranteed CFU counts and clinical backing.
Final Thoughts
Bifidobacterium lactis is a versatile, well-researched probiotic that offers broad-spectrum digestive and immune support. Its durability and proven effectiveness make it a foundational strain in high-quality probiotic regimens.
Scientific Studies
Schiffrin, E. J., et al. (1995). Immune modulation of human blood cells following the ingestion of lactic acid bacteria. Journal of Dairy Science, 78(3), 491–497. https://doi.org/10.3168/jds.S0022-0302(95)76655-6
Xiao, J. Z., et al. (2003). Effects of milk products fermented by Bifidobacterium lactis on defecation in healthy volunteers. Nutrition Research, 23(11), 1507–1514. https://doi.org/10.1016/j.nutres.2003.09.005
Ouwehand, A. C., et al. (2008). Probiotic and other functional microbes: Gut microbiota and health. Current Opinion in Biotechnology, 19(2), 170–175. https://doi.org/10.1016/j.copbio.2008.02.002
Weizman, Z., Asli, G., & Alsheikh, A. (2005). Effect of a probiotic infant formula on infections in child care centers: Comparison of two probiotic agents. Pediatrics, 115(1), 5–9. https://doi.org/10.1542/peds.2004-0252