Probiotics are live microorganisms, mainly bacteria and some yeasts, that may provide some health benefits. They also help to digest the foods we eat. “Probiotic” is a broad term for many different living organisms that can be found in foods, drinks, and supplements. The type and number of bacteria in our guts can change depending on our consumption of these items, in addition to other factors including health status, antibiotic and medication use, where we live, and even stress levels. Many of these probiotics found in food sources and supplements are like the bacteria found naturally in our bodies.