The Quick Answer

Yes. Brussels sprouts are one of the most nutrient-dense vegetables available. A single cup of cooked Brussels sprouts delivers more vitamin C than an orange, more vitamin K than almost any other food, and meaningful amounts of fiber, folate, and manganese — all for about 56 calories.

They belong to the Brassica family (the same group as broccoli, kale, and cabbage), which has been studied extensively for potential cancer-protective compounds. The research is promising, though not conclusive.

There are a few downsides — mostly related to gas and interactions with blood-thinning medications — but for the vast majority of people, eating Brussels sprouts regularly is a straightforwardly good idea.

Let’s break it down.

What Nutrients Do Brussels Sprouts Contain?

One cup (156 grams) of cooked Brussels sprouts provides:

• Calories: 56
• Protein: 4 grams
• Fiber: 4 grams (16% of daily value)
• Vitamin C: 97 mg (107% of daily value)
• Vitamin K: 219 mcg (182% of daily value)
• Vitamin A: 604 IU (12% of daily value)
• Folate: 94 mcg (24% of daily value)
• Manganese: 0.4 mg (18% of daily value)
• Potassium: 495 mg (14% of daily value)
• Vitamin B6: 0.3 mg (14% of daily value)
• Iron: 1.9 mg (10% of daily value)

For a deeper dive into the numbers, see the complete Brussels sprouts nutrition profile.

A few things stand out in this list.

Vitamin K (182% DV per cup)

Brussels sprouts are one of the richest food sources of vitamin K1 (phylloquinone). Vitamin K is essential for blood clotting and plays a role in bone metabolism. Most Americans don’t get enough of it, partly because the best sources are dark green vegetables that many people don’t eat regularly.

One cup of cooked Brussels sprouts gives you almost twice the daily recommended amount. This is generally a good thing, but it matters if you take blood thinners — more on that below.

Vitamin C (107% DV per cup)

Brussels sprouts contain more vitamin C per serving than oranges. Vitamin C supports immune function, collagen production, and iron absorption. It’s also an antioxidant that helps protect cells from damage.

Cooking reduces vitamin C content, but not dramatically. Steaming or roasting retains most of it. Boiling is the worst method for vitamin C preservation, since it’s water-soluble and leaches into the cooking water.

Fiber (16% DV per cup)

Four grams of fiber per cup puts Brussels sprouts in the upper tier of vegetable fiber content. The fiber is a mix of soluble and insoluble types. Soluble fiber supports gut bacteria and may help with cholesterol levels. Insoluble fiber adds bulk and supports regularity.

Most Americans get about 15 grams of fiber per day — less than half the recommended 25 to 30 grams. Adding Brussels sprouts to your regular rotation is a straightforward way to close that gap.

Folate (24% DV per cup)

Folate (vitamin B9) is critical for cell division and DNA synthesis. It’s especially important during pregnancy, where adequate folate reduces the risk of neural tube defects. Brussels sprouts are one of the better vegetable sources.

Are Brussels Sprouts Anti-Inflammatory?

There’s reasonable evidence to say yes, though the research is mostly observational and lab-based rather than large clinical trials.

Brussels sprouts contain several compounds with documented anti-inflammatory properties:

Kaempferol. A flavonoid antioxidant found in Brussels sprouts that has shown anti-inflammatory effects in cell and animal studies. It appears to reduce the production of inflammatory markers like cytokines and prostaglandins.

Vitamin C. Beyond its antioxidant role, vitamin C modulates immune function and may help reduce chronic low-grade inflammation.

Omega-3 fatty acids. Brussels sprouts contain small amounts of alpha-linolenic acid (ALA), a plant-based omega-3. The amounts are modest compared to fatty fish or flaxseed, but they contribute to the overall anti-inflammatory profile.

Glucosinolates. These sulfur-containing compounds (responsible for the distinctive smell when cooking Brussels sprouts) break down into isothiocyanates during digestion. Several isothiocyanates, particularly sulforaphane, have shown anti-inflammatory activity in lab studies.

The overall pattern in the research is consistent: people who eat more cruciferous vegetables (including Brussels sprouts) tend to have lower markers of chronic inflammation. Whether this is because of the vegetables specifically or because people who eat lots of vegetables tend to have healthier lifestyles overall is harder to prove.

Do Brussels Sprouts Help Prevent Cancer?

This is where the research gets interesting but requires careful interpretation.

Brussels sprouts and other cruciferous vegetables contain glucosinolates, which the body converts into compounds called isothiocyanates and indoles. These compounds have shown anti-cancer activity in laboratory and animal studies through several mechanisms:

• Inducing apoptosis (programmed cell death) in cancer cells
• Inhibiting tumor growth and angiogenesis (blood vessel formation that feeds tumors)
• Supporting the body’s detoxification enzymes
• Reducing DNA damage from carcinogens

The compound that gets the most attention is sulforaphane, which is produced when glucosinolates are broken down by an enzyme called myrosinase. Brussels sprouts are one of the richest food sources of the precursor to sulforaphane.

What the human studies show: Large population studies consistently find that people who eat more cruciferous vegetables have lower rates of several cancers, including colorectal, lung, breast, and prostate cancer. A 2012 meta-analysis in the Annals of Oncology found that high cruciferous vegetable intake was associated with a significant reduction in total cancer risk.

The caveat: These are observational studies. They show correlation, not causation. It’s possible that people who eat more Brussels sprouts and broccoli also exercise more, smoke less, and have other healthy habits that independently reduce cancer risk.

No major health organization currently claims that eating Brussels sprouts prevents cancer. The evidence is promising and warrants continued research, but it’s not at the level of a proven medical intervention.

The practical takeaway: Eating Brussels sprouts and other cruciferous vegetables regularly is associated with lower cancer risk in population studies. Even if the relationship isn’t purely causal, there’s no downside to including them in your diet.

Are Brussels Sprouts Good for Gut Health?

Yes, through two main mechanisms.

Fiber. The 4 grams of fiber per cup feeds beneficial gut bacteria and supports regular bowel movements. The soluble fiber in Brussels sprouts acts as a prebiotic — it’s fermented by gut bacteria into short-chain fatty acids (SCFAs) that nourish the cells lining the colon.

Glucosinolates. Emerging research suggests that glucosinolate-derived compounds may positively influence gut microbiome composition, though this area of study is still young.

There’s an irony here: the same fiber and sulfur compounds that make Brussels sprouts good for gut health in the long term are also responsible for the gas and bloating some people experience when eating them. The gas is actually a byproduct of gut bacteria fermenting the fiber and sulfur compounds — a sign that your microbiome is actively processing the food.

Can Brussels Sprouts Help with Weight Management?

Brussels sprouts have several properties that support weight management:

• Low calorie density. At 56 calories per cup (cooked), you can eat a large volume without consuming many calories.
• High fiber. Fiber slows digestion and promotes satiety. Studies consistently show that high-fiber diets are associated with lower body weight.
• High water content. Brussels sprouts are about 86% water, which contributes to feeling full.
• Protein (for a vegetable). At 4 grams per cup, Brussels sprouts have more protein than most vegetables, which helps with satiety.

No single food causes weight loss. But replacing calorie-dense side dishes with Brussels sprouts is a simple way to reduce overall calorie intake while still eating satisfying portions.

Are There Any Downsides?

Gas and Bloating

The most common complaint. Brussels sprouts contain raffinose, a complex sugar that humans lack the enzyme to digest. It passes to the large intestine where bacteria ferment it, producing gas. The sulfur compounds in Brussels sprouts (the same ones linked to health benefits) also contribute to particularly pungent gas.

Solutions: Start with small portions and increase gradually. Cook sprouts thoroughly — raw Brussels sprouts cause more gas than cooked. Roasting seems to be better tolerated than steaming or boiling for many people.

Vitamin K and Blood Thinners

If you take warfarin (Coumadin) or similar vitamin K-antagonist blood thinners, you need to keep your vitamin K intake consistent. You don’t have to avoid Brussels sprouts, but you shouldn’t suddenly start eating large amounts if you haven’t been. Talk to your doctor about maintaining a steady intake.

Newer blood thinners (like rivaroxaban, apixaban, or dabigatran) work through different mechanisms and are not affected by vitamin K intake.

Thyroid Concerns

Cruciferous vegetables contain goitrogens — compounds that can interfere with thyroid hormone production in large quantities. For people with normal thyroid function, this is not a concern at any realistic dietary intake. For people with existing hypothyroidism or iodine deficiency, very high intake of raw cruciferous vegetables could theoretically worsen thyroid function. Cooking significantly reduces goitrogen content.

The practical risk is minimal. You would need to eat several pounds of raw Brussels sprouts daily for this to become an issue. Normal dietary amounts — even daily servings — are fine for the vast majority of people, including those with thyroid conditions.

Digestive Conditions

People with IBS (irritable bowel syndrome) may find Brussels sprouts trigger symptoms, as they’re high in FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols). If you’re following a low-FODMAP diet, Brussels sprouts are typically limited to about 2 sprouts per sitting.

How Much Should You Eat?

There’s no official recommended amount specific to Brussels sprouts. General dietary guidelines recommend 2.5 to 3 cups of vegetables per day for adults, with an emphasis on variety. Including Brussels sprouts 2 to 3 times per week, in servings of about 1 cup cooked, is a reasonable target that captures the health benefits without overdoing the gas.

Raw vs. Cooked: Which Is Healthier?

Both have advantages.

Raw Brussels sprouts retain more vitamin C and may produce more sulforaphane (since the myrosinase enzyme is heat-sensitive). Shaved raw Brussels sprout salads are a good way to get these benefits.

Cooked Brussels sprouts have reduced goitrogen content, are easier to digest (less gas), and some nutrients become more bioavailable with cooking. Steaming preserves the most nutrients. Roasting adds flavor but reduces vitamin C more than steaming.

The best approach is to eat them both ways. For recipe ideas that preserve maximum nutrition, see our health benefits deep dive.

The Bottom Line

Brussels sprouts are exceptionally good for you. They’re packed with vitamins C and K, rich in fiber, contain compounds being studied for cancer prevention, support gut health, and are very low in calories. The downsides — gas, potential blood thinner interactions, theoretical thyroid effects — are minor for most people and manageable with basic awareness.

If you’re not eating Brussels sprouts, you probably should be. And if the taste has kept you away, modern varieties are significantly less bitter than what was available decades ago. The vegetable has genuinely improved — it’s not just nostalgia.