Lactobacillus Casei
Snapshot
Lactobacillus casei is a beneficial probiotic bacterium that supports digestive balance, enhances immune function, and promotes nutrient absorption through its competitive inhibition of pathogens.
What is Lactobacillus casei?
Lactobacillus casei is a Gram-positive, rod-shaped lactic acid bacterium commonly found in the human intestine and fermented dairy products; it produces lactic acid and bioactive metabolites.
Where It Comes From
L. casei is isolated from fermented foods like yogurt and kefir and is cultivated industrially for inclusion in probiotics and functional foods, often combined with other Lactobacillus strains.
Key Nutrients & Compounds
Supplemental L. casei provides live cultures (CFU counts) that produce lactic acid, short-chain fatty acids, and bacteriocins, supporting a healthy gut environment and barrier integrity.
Health Benefits
L. casei enhances gut microbiota diversity; reduces symptoms of diarrhea and IBS; supports immune response by modulating cytokine production; and aids lactose digestion and metabolic health.
Recommended Dosage
Probiotic supplements typically deliver 1–10 billion CFU per serving; take daily with meals; follow manufacturer guidelines to ensure viability.
How to Use It
Consume L. casei in capsules, tablets, or fermented dairy products; store according to label instructions (often refrigerated) to maintain potency.
Who Should Use It?
Individuals experiencing digestive disturbances, antibiotic-associated diarrhea, or those seeking immune support and improved nutrient absorption.
Possible Interactions or Cautions
Generally safe; avoid use in severely immunocompromised individuals without medical advice; rare risk of bacteremia in vulnerable patients.
Final Thoughts
Lactobacillus casei is a versatile probiotic for gut and immune health, offering broad benefits in functional foods and targeted supplementation.
Scientific Studies
Goldin BR, Gorbach SL. Clinical indications for probiotic applications: an update. Clin Infect Dis. 2008;46(Suppl 2):S96–S100. https://doi.org/10.1086/524660
Nagata S, Tamura M, Ando H. Effects of Lactobacillus casei Shirota on immune function and intestinal microflora in bedridden elderly patients. J Nutr Sci Vitaminol (Tokyo). 2012;58(6):389–396. https://doi.org/10.3177/jnsv.58.389
Ouwehand AC, Salminen S, Isolauri E. Probiotics: an overview of beneficial effects. Antonie Van Leeuwenhoek. 2002;82(1–4):279–289. https://doi.org/10.1023/A:1020620607611