Yogurt may be a healthy snack choice but, bacteria-wise, it doesn’t necessarily measure up to a comprehensive probiotic supplement. First, yogurt may not be as probiotic-rich as you think. Many yogurts on supermarket shelves are heat-treated (pasteurized) to give the products a longer shelf life which, unfortunately, kills off the live cultures. Plus, while most yogurt contains just three strains of probiotics, many supplements offer more. Finally, foods just don’t seem to have the amount of probiotics necessary to provide the benefits that supplementation can.