Cauliflower: Nutrition Profile and Potential Health Benefits

Cauliflower is a popular, highly-versatile vegetable that belongs to the same cruciferous group of vegetables as cabbage and broccoli.

It is high in vitamin C and a good source of choline, folate, and vitamin K. It also contains a range of bioactive compounds, such as glucosinolates, isothiocyanates, and polyphenols.

In this complete nutritional guide to cauliflower, we examine its key benefits, potential health effects according to scientific research, and its overall nutritional profile.

Key Benefits of Cauliflower

Firstly, we’ll examine the key nutrients that cauliflower provides and what they can offer us.

High in Vitamin C

While many people associate vitamin C with bright and colorful foods, cauliflower is also surprisingly high in this essential vitamin.

According to USDA data, a 155g cup of cooked cauliflower provides 65.9 mg of vitamin C. This is equal to 73% of the daily value (% DV) set by the FDA, which is based on a 2000-calorie diet.

Vitamin C is important for several reasons, including its:

• Immune health role: Vitamin C plays a role in supporting and strengthening the immune system.
• Antioxidant properties: Vitamin C helps to protect against damage to cells from free radicals.
• Impact on iron absorption: Vitamin C enhances (non-heme) iron absorption from plant sources, helping you to absorb more iron. This is particularly important for vegetarians and vegans.

Rich Source of Folate

Cauliflower provides a good amount of folate, with a 155g cup serving offering 77.5 mcg, equal to 19% of the daily value.

Among its other functions, folate, which is a form of vitamin B9, plays a role in:

• Producing DNA
• Proper cell function
• Supporting a healthy pregnancy

Folate is particularly important for pregnant women and women attempting to conceive, as it can help to prevent neural tube defects.

Choline Content

Cauliflower offers a good source of choline, supplying 71.3 mg per 155g cup serving, which is 13% of the daily value.

Choline is involved in a broad range of processes that impact cell function, memory, mood, and more.

Vitamin K Provision

Cauliflower is a source of phylloquinone (vitamin K1), which is the form of vitamin K found in plants.

It contains 25 mcg per 155g cup, which is 21% of the daily value for vitamin K.

Vitamin K is important for bone health and blood clotting, allowing the body to heal (or stop bleeding) in response to cuts.

Note: Vitamin K is fat-soluble, so consuming it alongside a source of fat can help with better absorption.

Cauliflower Is a Highly Versatile Vegetable

Versatility is another of cauliflower’s benefits, with this vegetable having a high degree of adaptability.

In fact, there are so many ways that cauliflower can be used:

• Served by itself: Cauliflower can be boiled, steamed, roasted, or pan-fried
• Stir-fries and soups: Cauliflower works well mixed into different dishes and can absorb flavors from other foods.
• Cauliflower gratins: These dishes feature cauliflower covered in a seasoned and creamy cheese sauce.
• Cauliflower rice: Cauliflower rice refers to cauliflower finely diced/processed into small pieces that resemble grains of rice. It is popular as a rice alternative for those following low-carb and low-calorie diets.
• Cauliflower wings: In recent years, cauliflower wings have become a popular plant-based alternative to chicken wings. While they don’t offer the same protein content, they are battered, fried, and coated in flavors similar to how chicken wings are prepared.

As this brief list shows, you can prepare cauliflower in many ways. There are plenty of cauliflower recipes available online if any of these sound tempting.

Potential Benefits From Scientific Research

In addition to its essential vitamin and mineral profile, cauliflower also contains several bioactive compounds.

These include glucosinolates, isothiocyanates, and polyphenols, all of which have attracted significant scientific research.

Polyphenols

Research suggests that cauliflower contains a modest polyphenol content, consisting of compounds like quercetin and mataeresinol.

However, it is worth noting that purple cauliflower, which isn’t as common, has a significantly higher polyphenol content than regular cauliflower. This includes a high concentration of anthocyanins, which are responsible for the vegetable’s purple pigment.

Anthocyanins are also found in blue and purple-pigmented fruit and vegetables, such as blueberries and blackberries. A 2025 umbrella review of systematic reviews found limited evidence indicating they may have positive health effects through their potential ability to reduce inflammation and improve blood lipids (cholesterol levels).

Glucosinolates and Isothiocyanates

All cruciferous vegetables, including cauliflower, contain a range of sulfur-containing compounds called glucosinolates.

When these compounds are processed, either through chopping, chewing, or typical digestive processes, they convert to isothiocyanates, such as sulforaphane.

Research has looked into these compounds extensively, with mixed findings linking them to a potential lower risk of specific cancers.

For example, here are some recent findings from large scientific studies:

• Cruciferous vegetables and cancer risk: A 2025 systematic review investigated the link between cruciferous vegetable intake and the risk of different cancers. The study found that consuming approximately 5–7 servings of cruciferous vegetables per week was associated with a 4–23% reduced risk of specific cancers, which included colorectal cancer, lung cancer, and bladder cancer.
• Colon cancer: Another 2025 systematic review found a potential association between cruciferous vegetable intake and a lower risk of colon cancer. These effects were seen at doses starting at 20 grams per day. However, the authors noted that uncertainty exists, and that the results require confirmation through further high-quality studies.
• Multiple health outcomes: A 2022 umbrella review assessed data from 41 systematic reviews on cruciferous vegetable intake and various health outcomes. The review found beneficial associations between cruciferous vegetable consumption and a lower risk of several cancers, including gastric cancer and lung cancer, and also all-cause mortality. For other outcomes, the evidence was too weak to have confidence in a beneficial effect.

This is a small selection of the available research on cruciferous vegetables, which is currently ongoing.

Previous experimental (animal and cell) studies have found that isothiocyanates have anti-inflammatory effects and may help to prevent cell damage and the formation of tumor blood vessels.

Full Nutritional Profile

In the following sections, you can see the complete nutritional values of cauliflower.

We present this nutritional data for per 100 grams of cooked cauliflower and also for a 155g cup, which is a typical serving.

Nutritional data has been sourced from the USDA’s FoodData Central entry for cooked cauliflower, and percent daily values (% DV) have been calculated based on the FDA’s current figures.

Calories and Macronutrients

Nutrient	Per 100g	Per 155g cup (% DV)
Calories	26 kcal	40 kcal
Carbohydrates	5.16g (2%)	8.0g (3%)
Fiber	2.1g (8%)	3.26g (11%)
Sugars	1.98g	3.07g
Fat	0.29g (<1%)	0.45g (<1%)
Saturated fat	0.14g (<1%)	0.21g (1%)
Monounsaturated fat	0.04g	0.05g
Polyunsaturated fat	0.03g	0.05g
Omega-3	0.016g	0.025g
Omega-6	0.017g	0.026g
Protein	1.99g (4%)	3.08g (6%)
Cholesterol	0 mg (0%)	0 mg (0%)

Vitamins

Vitamin	Per 100g (% DV)	Per 155g cup (% DV)
Vitamin A (RAE)	0 mcg (0%)	0 mcg (0%)
Vitamin C	42.5 mg (47%)	65.9 mg (73%)
Vitamin D	0 mcg (0%)	0 mcg (0%)
Vitamin E	0.08 mg (<1%)	0.12 mg (1%)
Vitamin K	16.1 mcg (13%)	25 mcg (21%)
Thiamin (B1)	0.05 mg (4%)	0.07 mg (6%)
Riboflavin (B2)	0.06 mg (5%)	0.09 mg (7%)
Niacin (B3)	0.5 mg (3%)	0.78 mg (5%)
Vitamin B6	0.17 mg (10%)	0.27 mg (16%)
Folate (B9)	50 mcg (13%)	77.5 mcg (19%)
Vitamin B12	0 mcg (0%)	0 mcg (0%)
Choline	46 mg (8%)	71.3 mg (13%)

Minerals

Mineral	Per 100g (% DV)	Per 155g cup (% DV)
Calcium	23 mg (2%)	35.6 mg (3%)
Iron	0.44 mg (2%)	0.68 mg (4%)
Magnesium	16 mg (4%)	24.8 mg (6%)
Phosphorus	46 mg (4%)	71.3 mg (6%)
Potassium	311 mg (7%)	482 mg (10%)
Sodium	152 mg (7%)	236 mg (10%)
Zinc	0.28 mg (3%)	0.43 mg (4%)
Copper	0.04 mg (4%)	0.06 mg (7%)
Selenium	0.6 mcg (1%)	0.93 mcg (2%)

Note on sodium content: The above table presents cooked cauliflower as having a sodium content of 152 mg per 100 grams. However, cauliflower is not naturally this high in sodium, with raw cauliflower only containing 30 mg of sodium per 100g. Therefore, the sodium figures in the above table are likely because salt has been added to the cauliflower during the cooking process, influencing the USDA source data.

Potential Drawbacks

As with most foods, there are some potential drawbacks of cauliflower worth considering. These are primarily context-specific and relate to high intake levels.

Cauliflower Dishes Can Be High in Calories

While cauliflower is very low in calories, it may not be in some of the ways it is commonly consumed:

• Cauliflower gratins full of cheese
• Cauliflower rice stir-fried in oil
• Cauliflower wings, and cauliflower pizzas

Interestingly, a 2021 systematic review examined the association between various fruits and vegetables with type 2 diabetes risk. While most fruits and vegetables were associated with a reduced risk, some, including cauliflower, fruit juice, and potatoes were associated with an increased risk.

The researchers did note that these associations require further research to allow more confidence in the results. However, it’s possible that the ways these foods are often consumed may contribute to excess energy (food) intake. For example, cheesy cauliflower gratins, large intakes of fruit juice, and fried potato products.

Drug Interactions

Cruciferous vegetables, including cauliflower, contain certain compounds that can impact the way the body processes certain classes of medication.

A 2020 systematic review examined this issue and found that, based on 23 clinical trials, cruciferous vegetable intake sped up the activity of enzymes which break down certain drugs.

Based on these results, the authors noted that large cruciferous vegetable intake could potentially interact with CYP1A2 and GST-a based medicines. These medicines may include certain varieties of antidepressants, anticoagulants, and asthma drugs, among others.

Individuals with a high cruciferous vegetable intake using such drugs should consult with their healthcare provider for guidance.

Summary

As shown in this article, there are several good reasons to consider including cauliflower in your diet:

• It’s a rich source of vitamin C and contains good amounts of choline, folate, and vitamin K.
• You can prepare it in many different ways, allowing versatility in the kitchen.
• It provides glucosinolates and isothiocyanates, which mixed research suggests may have some potential benefits for our health.

References