CLINICAL KNOWLEDGE MAGAZINE
5 min read
How living bacterial cultures function and their applications
Emilia Szymańska
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Diets Premium Medical Expert • 24.09.2026
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Scientifically reviewed by a clinical dietitian:
This article has been peer-reviewed for adherence to IŻŻ, WHO, and PTGiP clinical nutritional standards.
| CLINICAL KNOWLEDGE MAGAZINE CLINICAL KNOWLEDGE MAGAZINE | min read 5 min |
| Diets Premium Medical Expert Emilia Szymańska | Scientifically reviewed by a clinical dietitian 24.09.2026 |
Key Takeaways
Fermented foods such as sauerkraut, pickles, and probiotic dairy products like yogurt, kefir, and buttermilk are rich sources of live bacterial cultures. Learn about their properties and health benefits.
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It's a living culture of bacteria
According to the World Health Organization's definition, live cultures of bacteria are fermented dairy products, such as kefir, yogurt or oats, which are recommended during the course of antibiotic therapy because they have a beneficial effect on the host's health. In other words, live bacteria are probiotic bacteria that live in our digestive tract and have a number of beneficial functions. Eating fermented milk products such as Kefir, Yogurt or Oats is recommended during antibiotic treatment because it accelerates the balance of the natural microbial interaction of the cosmetic tract.
Live cultures of bacteria for yogurt
Yogurt available in stores, as well as kefir and buttermilk, are products that naturally contain live cultures of bacteria because they were created by injecting milk with specific probiotic bacteria that carried out the fermentation process of lactose. Nowadays it is becoming more fashionable to make many homemade recipes on its own, including homemade yogurt. In online stores you can successfully find so-called yogurt or starter containing yogurt bacteria for homemade milk processing.
Live cultures of bacteria and weight loss
The scientific literature has often pointed to a negligible relationship between proper microbiology and behaviour appropriate to the size, age and sex of the body. Other gut microflora has been observed in lean people (Bacterioides strain) and obese people (Firmicutes strain). In experimental studies on mice free of any microorganism contamination, it has been noted that transplanted microbes from obese mice to lean mice caused their body weight to deteriorate.
Live cultures of bacteria in the powder, tablets
According to the current state of knowledge, the most studied and considered to be the most effective are preparations containing strains of live lactic acid bacteria Lactobacillus rhamnozus GG cultures, and I recommend that you choose these when you buy... the form of the product you choose depends on your preferences.
Live cultures of bacteria for babies
It is recommended to use probiotic preparations in infants for acute infectious diarrhea as well as antibiotics. It is worth mentioning that in infants, the preparations tested and containing strains of bacteria recommended for use in young children should be chosen because the microflora of the human body changes throughout life. In infants, I also recommend preparations containing Lactobacillus rhamnozus GG, and the preferred form of the drug that will be the easiest to administer is drops.
Live cultures of bacteria price where to buy
Probiotics can easily be purchased in most good on-premises pharmacies as well as online pharmacies. Unfortunately, high-quality probiotics containing strains of bacteria with proven beneficial effects are not cheap. For 5 ml of drops for babies or a pack of 30 capsules for adults, we will pay about PLN 30. Probiotic bacteria are very important for the proper functioning of the human body.
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Emilia Szymańska
Diets Premium Medical Expert
Member of the Diets Premium clinical editorial board. Specializes in medical diet therapy, metabolic health, and nutritional planning.
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