# What exactly does a probiotic do? ## Introduction Probiotics are live microorganisms that can provide measurable benefits when consumed in adequate amounts. They are studied for their roles in digestion, immune support, and microbiome balance. This article summarizes how probiotics function and how they may support intestinal wellness. ## What probiotics are Probiotics include strains of beneficial bacteria such as Lactobacillus and Bifidobacterium, and sometimes yeasts. They are used to enhance the native gut microbiota and support digestive processes. Strain specificity and dose matter for expected effects. ## How probiotics support digestion Probiotics can assist enzymatic breakdown of nutrients and help reduce symptoms like bloating or irregularity in some people. They may shorten antibiotic-associated disturbances by helping repopulate beneficial microbes. Clinical evidence varies by strain and condition. ## Microbiome balance and immunity Probiotics can influence microbial diversity and produce metabolites like short-chain fatty acids that support gut barrier function. A balanced microbiome is linked to regulated immune responses and improved nutrient absorption. Probiotics are one part of a larger strategy that includes fiber, sleep, and stress management. ## Practical guidance Choose products that list strains and CFU counts, and consider timing with meals to improve survival through the stomach. Most people tolerate probiotics well, but individuals with complex health issues should consult a clinician. Combining probiotics with prebiotic fibers may enhance their effects. ## Resources For a detailed overview see the full guide at [Topvitamine blog on probiotics](https://www.topvitamine.com/blogs/news/what-does-a-probiotic-do). For advice on identifying unsafe supplements consult [How to Spot Fake or Counterfeit Supplements](https://hackmd.io/@topvitamins/how-to-spot-fake-or-counterfeit-supplements-before-you-buy). To explore adaptogen guidance see [Unlocking the Power of Adaptogens](https://hackmd.io/@topvitamins/unlocking-the-power-of-adaptogens-for-stress-relief-and-mental-clarity). For a brief checklist on supplement authenticity read this note on Telegraph: [Spot Fake Supplements - Telegraph](https://telegra.ph/How-to-Spot-Fake-or-Counterfeit-Supplements-Before-You-Buy-12-25). Always consult a healthcare provider before starting new supplements.