Probiotics are live microorganisms that, when consumed in adequate amounts, provide health benefits to the host. These microorganisms are typically bacteria or yeast that naturally exist in our bodies or can be obtained from certain foods or supplements. The word "probiotic" comes from the Greek words "pro," meaning "for," and "biotic," meaning "life." Probiotics are often referred to as "friendly" or "good" bacteria because of their beneficial effects on our health. The most common types of bacteria used as probiotics belong to the Lactobacillus and Bifidobacterium genera, although other strains such as Saccharomyces boulardii, Streptococcus thermophilus, and certain strains of Escherichia coli are also used. These microorganisms work by colonizing the gut and interacting with the existing microbial community, thereby promoting a balanced gut microbiota. understanding probiotics and recognizing the importance of gut health is crucial for maintaining optimal well-being. Probiotics offer a natural and effective way to support and enhance the health of our gut microbiota, which can have far-reaching effects on various aspects of our physical and mental health.