Summary
Live beneficial microbes that, in adequate amounts, support gut health.
In depth
Typical strains are Lactobacillus and Bifidobacterium. They may help with antibiotic-associated diarrhoea, but evidence for many claimed benefits is limited. Prebiotics are fibres that feed beneficial bacteria.
Probiotics must be alive, in adequate numbers and give a documented benefit. Strain specificity matters. Effects often transient.
Common mistake: all fermented foods contain probiotics; some are heat-treated.
Frequently asked questions
What is Probiotics?
Live beneficial microbes that, in adequate amounts, support gut health.
Which area of biology covers Probiotics, and how advanced is it?
Probiotics is one of the 54 topics in Microbiology. It is rated Beginner, so it suits learners who are starting out in biology. Related topics in this area include Gram Staining, Microorganisms, Conjugation.
Can you give an example of Probiotics?
Fermented foods such as kefir and kimchi.
What should I learn before Probiotics?
Probiotics is a Beginner topic, so no earlier topic is required. Other Beginner topics in Microbiology that pair well with it include Microorganisms, Bacteria, Archaea.
What topics are related to Probiotics?
The closest topics to Probiotics are Gram Staining, Microorganisms, Conjugation, Selective and Differential Media. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Probiotics?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Probiotics. To practise the whole of Microbiology, use the Microbiology quiz.
How is Probiotics different from Gram Staining?
Probiotics: Live beneficial microbes that, in adequate amounts, support gut health. Gram Staining: A staining technique that divides bacteria into Gram-positive and Gram-negative by cell wall structure. Read both side by side and note what each one explains.
What is a common mistake about Probiotics?
All fermented foods contain probiotics; some are heat-treated.
How should I study Probiotics step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Gram Staining and explain the difference aloud. Finally, take the Microbiology quiz and come back to this page for any question you miss.