Sauerkraut is one of the lowest-calorie foods you can add to your diet, with just 27 calories per cup, and its combination of fiber, probiotics, and sheer volume makes it a useful tool for weight loss when eaten consistently. The key is choosing the right kind, eating the right amount, and knowing how to work it into meals without overdoing the sodium.
Why Sauerkraut Helps With Weight Loss
A full cup of sauerkraut contains roughly 27 calories, 6 grams of carbohydrates, and 3.5 grams of fiber. That fiber-to-calorie ratio is exceptional. Fiber slows digestion, keeps you feeling full longer, and feeds the beneficial bacteria in your gut. For context, you’d need to eat about 10 cups of sauerkraut to reach the calorie count of a single granola bar.
Raw, unpasteurized sauerkraut also delivers live probiotic bacteria. These microorganisms support a healthy gut environment, and a growing body of evidence links gut bacteria diversity to healthier body weight. The fermentation process that creates sauerkraut produces strains of lactobacillus bacteria, which play a role in how your body processes nutrients and stores fat. Pasteurized sauerkraut (the shelf-stable kind in cans or jars that doesn’t need refrigeration) has been heat-treated, killing most of those beneficial organisms. If probiotics are part of your goal, the refrigerated section is where you want to shop.
How Much to Eat Each Day
Start with about one tablespoon (roughly 10 grams) per day. This is especially important if you’re not used to eating fermented foods, because jumping straight to large portions can cause bloating, gas, and stomach discomfort as your gut adjusts to the influx of probiotics and fiber.
Once your digestive system adapts over a week or two, you can gradually increase your intake up to about six tablespoons (60 grams) per day. Consistency matters more than quantity here. Eating a small amount every day does more for your gut health and eating habits than eating a large bowl once a week. Many nutritionists suggest eating sauerkraut in the morning on a relatively empty stomach, as this may allow the probiotics to survive the journey through your digestive tract more effectively. That said, any time of day works if it fits your routine.
Best Ways to Add It to Meals
Sauerkraut works best as a side or topping rather than a main dish, which makes it easy to pair with meals you’re already eating. Here are some practical ways to include it:
- On top of eggs: A spoonful of sauerkraut on scrambled or fried eggs adds tang and fiber to a protein-rich breakfast.
- In grain bowls: Mix it into rice, quinoa, or farro bowls alongside roasted vegetables and a lean protein.
- As a salad component: Toss a few tablespoons into a green salad. The brine can double as part of a vinaigrette.
- With lean protein: Sauerkraut pairs naturally with chicken, turkey, or fish. Pile it on top or serve it alongside.
- Straight from the jar: If you enjoy the taste, eating it plain before a meal is the simplest approach.
One important rule: don’t cook it if you want the probiotic benefits. Heat kills the live bacteria. Add sauerkraut after cooking, or eat it cold on the side. If you’re using it in a warm dish, let the food cool slightly before mixing it in.
The Sodium Problem
Sauerkraut is categorized as a food especially rich in salt. This is the biggest nutritional downside, and it’s worth paying attention to if you’re eating it daily. Georgetown University’s nephrology guidelines classify sauerkraut among high-sodium foods, and for people managing high blood pressure, the recommended daily sodium limit falls between 1,800 and 2,750 milligrams. A single cup of sauerkraut can contain over 900 milligrams of sodium, which is a significant chunk of that budget.
There are a few ways to manage this. Rinsing sauerkraut under cold water for 30 seconds removes a meaningful portion of the surface sodium while keeping most of the fiber and some of the probiotics intact. You can also look for low-sodium varieties, which are increasingly available in the refrigerated section of grocery stores. If you’re keeping your portions to one to six tablespoons per day as recommended, the sodium stays much more manageable than if you were eating full cups at a time.
Choosing the Right Sauerkraut
Not all sauerkraut is created equal for weight loss purposes. The version that offers the most benefit is raw, unpasteurized sauerkraut sold in the refrigerated section. Check the label for a short ingredient list: cabbage, salt, and possibly water. That’s all it needs. Avoid products with added sugar, preservatives, or wine, all of which add unnecessary calories and can interfere with the fermentation profile.
Canned sauerkraut has been pasteurized, so while it still provides the fiber and low calorie count, you lose the probiotic advantage. It also tends to be higher in sodium than refrigerated varieties. If canned is your only option, rinsing it is a good practice.
Making your own sauerkraut at home is straightforward and gives you full control over the salt content. All you need is cabbage, salt (about 2% of the cabbage’s weight), a jar, and roughly three to four weeks of patience while it ferments at room temperature. Homemade versions typically contain less sodium than commercial products and produce a robust population of live bacteria.
What Sauerkraut Won’t Do
Sauerkraut is not a fat burner. No food is. It supports weight loss indirectly by being extremely low in calories, high in fiber, and rich in probiotics that contribute to a healthier gut environment. Formal research on sauerkraut’s direct effect on satiety or appetite suppression is still limited. A 2023 systematic review of fermented plant foods and fullness found that the effect of sauerkraut on satiety specifically had not been studied in controlled trials.
What sauerkraut does well is replace higher-calorie sides and condiments. Swapping out coleslaw (which can run 300 calories per cup with dressing) or a starchy side for a portion of sauerkraut creates an easy calorie deficit without leaving you hungry. Over weeks and months, those small swaps add up. The probiotic benefits are a bonus that may improve digestion and nutrient absorption, but the calorie math is where the real weight loss impact lives.