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Sauerkraut does more than give your burger a delicious flavor boost, it’s actually a good source of probiotics, aka the good bacteria that live in your gut. These bacteria contribute to the health of your gut and are essential for a healthy digestive tract and immune function. Certain things like an unhealthy diet, undue stress, or a harsh round of antibiotics can affect the balance and health of the probiotics in the stomach. So it’s important to feed your gut with natural sources of probiotics, like sauerkraut.