Cabbage is a moderate source of fiber, providing about 2 to 3 grams per cup depending on the variety. That’s roughly 8 to 10 percent of the daily recommended intake of 25 to 30 grams, which puts cabbage in a similar range to other common vegetables like broccoli and carrots. It won’t single-handedly meet your fiber needs, but its low calorie count and versatility make it an easy way to add fiber throughout the day.
Fiber Content by Variety
Not all cabbages are created equal when it comes to fiber. Savoy cabbage, with its crinkled leaves, leads the pack at 3.1 grams per 100 grams (about 2.8 grams per chopped cup). Green cabbage comes in at 2.5 grams per 100 grams, or roughly 2.2 grams per cup. Red cabbage trails slightly at 2.1 grams per 100 grams, giving you about 1.9 grams per cup.
These differences are modest, but if you’re actively trying to increase your fiber intake, savoy cabbage gives you about 40 percent more fiber per serving than red cabbage. That said, most people choose their cabbage based on the recipe, and any variety contributes meaningful fiber.
The Type of Fiber in Cabbage
Cabbage fiber is predominantly insoluble. In green cabbage, roughly 80 percent of the total fiber is insoluble (1.79 grams per 100 grams) while only about 20 percent is soluble (0.46 grams per 100 grams). This distinction matters because the two types of fiber work differently in your body.
Insoluble fiber is the kind that adds bulk to stool and helps keep bowel movements regular. It moves through your digestive tract largely intact, acting like a broom that keeps things moving. Soluble fiber, on the other hand, dissolves in water to form a gel-like substance that slows digestion and can help manage blood sugar and cholesterol levels. Cabbage gives you a useful dose of both, though it leans heavily toward the gut-motility benefits of insoluble fiber.
How Cabbage Fiber Affects Your Body
The insoluble fiber in cabbage supports digestive regularity in a straightforward way: it increases stool bulk and speeds transit time through the intestines. For people who struggle with constipation, eating cabbage regularly can help.
Cabbage fiber also plays a role in cholesterol management. Both fiber and plant sterols found naturally in cabbage compete with cholesterol for absorption in the digestive tract. The result is that less “bad” cholesterol makes it into your bloodstream. This isn’t a dramatic effect from a single serving, but it adds up as part of a fiber-rich diet.
Because fiber isn’t digested or absorbed, it takes up space in your stomach without contributing usable calories. A large serving of cabbage, like the amount you’d find in a coleslaw or stir-fry, can help you feel full faster and stay satisfied longer. This makes cabbage particularly useful if you’re managing your weight.
Fermented Cabbage and Fiber
Sauerkraut and kimchi retain the fiber from raw cabbage while adding benefits from the fermentation process. Lactic acid fermentation can increase levels of B vitamins, short-chain fatty acids, and beneficial bacteria. The fiber itself may become more bioactive through fermentation, and the probiotics produced during the process support gut health in ways that go beyond what raw cabbage offers alone.
If you’re choosing between raw and fermented cabbage purely for fiber, the amounts are comparable. The real advantage of fermented cabbage is the combination of fiber with live cultures that feed and diversify your gut microbiome.
Why Cabbage Can Cause Gas
If you’ve ever eaten a big bowl of cabbage soup and felt bloated afterward, there’s a specific reason. Cabbage contains raffinose, a complex sugar that human enzymes can’t break down. Instead, bacteria in your large intestine ferment the raffinose along with the insoluble fiber, producing gas as a byproduct.
This doesn’t mean cabbage is bad for your digestion. It means your gut bacteria are doing their job. The bloating tends to be worse if you suddenly increase your cabbage intake after eating very little fiber. Starting with smaller portions and building up over a week or two gives your gut bacteria time to adjust, which typically reduces the gas and discomfort. Cooking cabbage also softens the fiber and breaks down some of the raffinose, making it easier to digest than raw cabbage for most people.
How Cabbage Compares to Other Vegetables
- Cabbage (green): 2.5 g fiber per 100 g
- Broccoli: 2.6 g per 100 g
- Carrots: 2.8 g per 100 g
- Brussels sprouts: 3.8 g per 100 g
- Green peas: 5.7 g per 100 g
- Artichoke: 5.4 g per 100 g
Cabbage sits in the middle of the pack. It’s not a fiber powerhouse like peas or artichokes, but it holds its own against everyday vegetables. Where cabbage stands out is value: it’s inexpensive, stores well for weeks in the refrigerator, and you can easily eat it in large quantities. A generous two-cup serving of chopped green cabbage delivers about 4.4 grams of fiber for roughly 45 calories, a ratio that’s hard to beat.