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Answer: Eating yogurt may help with certain types of diarrhea. By replenishing the good bacteria that may have been lost, yogurt can help bring the bad bacteria back in balance. However, if you have fever, abdominal pain or swelling, or your diarrhea lasts more than a couple of days, you should see your doctor.

Question: What are the disadvantages of not getting enough prebiotics in your diet?

Answer: Prebiotics help nourish the probiotics in your intestines. You need a healthy amount of probiotics in your intestines to help keep your digestive system in balance. If you don’t eat foods rich in prebiotics, the level of probiotics may fall. While it’s unclear exactly what effect that may have on any individual, we do know that it’s important to keep the right balance between good and harmful bacteria.

Question: Can adding prebiotics to my diet benefit my baby and me in any way while I'm breastfeeding?

Answer: It’s a good idea to make foods rich in probiotics and prebiotics a part of your healthy diet. In addition to any potential benefit you get from probiotics, many of the foods are sources of other healthy nutrients. Healthy bacteria, especially lactobacillus, are found in breast milk. So eating foods rich in probiotics can help support a healthy digestive and immune system for both you and your baby. There is even some evidence that eating a diet rich in probiotics may help calm colic in babies, but it’s too early to know for sure.

Question: Can drinking kefir help me avoid repeat urinary tract infections? If so, how much of it should I drink to see a difference?

Answer: There is some medical evidence that drinking kefir -- a fermented milk drink -- may help prevent urinary tract infections. However, the research is very preliminary, and not all studies support eating probiotic-rich foods for this purpose. In addition, we don’t have enough information to know what’s the right amount. However, since three servings of dairy are recommended each day, it’s reasonable to include at least one or two of those servings from either kefir or yogurt, which is also a probiotic-rich source of dairy.

Question: What is probiotic milk?

Answer: Probiotic milk is milk that had probiotics added to it. Milk isn’t a natural source of probiotics. Other dairy products that are fermented, such as yogurt and buttermilk, do contain probiotics.

Question: Do soy and almond milk contain probiotics?

Answer: Most soy and almond milk brands do not have significant amounts of probiotics. However, there are brands of both that are fortified with probiotics. Just look for “probiotics” on the label or any reference to live or active cultures. That’s a good sign that the product has been fortified with probiotics.