Probiotics are live microorganisms (particular bacteria and yeast) that have health advantages when consumed in the appropriate proportions. Probiotics are accessible as nutritional supplements, but some can also be found in fermented foods. In this field of nutrition, research is ongoing to determine which probiotic strains are prevalent in various foods and which ones confer health advantages. Probiotics are "good" bacteria — or live cultures — similar to those found in your stomach naturally. These active cultures help to regulate gut flora by changing or repopulating intestinal bacteria. This functional component has the potential to improve immunity as well as overall health, particularly gut health.
A prebiotic is a deliberately fermented food that causes specific changes in the gastrointestinal microbiota, both in composition and activity, to enhance the host's well-being and health. Prebiotics include a variety of poorly digested carbohydrates, such as specific fibres and resistant starches, although the most well-known prebiotics are non-digestible oligosaccharides. Prebiotics may have a variety of health benefits in the gastrointestinal tract. However, the majority of prebiotics' health benefits are indirect, i.e., they are mediated by the intestinal bacteria, and so are less well-proven. Synbiotics are the mix of pre- and probiotics. Including health-promoting functional foods, such as those that include both prebiotics and probiotics, in your diet will help you become healthier.