Probiotics are helpful and very essential live bacteria found in foods such as yogurt, miso, jicama, kombucha, leeks, sauerkraut, dandelion greens, and so on, that help keep the gut bacterial population at an appropriate level. They are believed to be sensitive to both heat and stomach acid. There are probiotic supplements available. However, choosing one can be a challenge as there are concerns about the types of strains of bacteria available and their viability in a bottle of capsules that may sit on a shelf for a long time. Like most everything else, probiotics need appropriate food. Bottom line, probiotics eat prebiotics. More tomorrow.