Which is better, cauliflower or broccoli? A nutritional comparison, composition, and cooking methods for white cauliflower and broccoli.

When people think of "antioxidant super vegetables," many immediately think of "cauliflower"—but is it really white?Cauliflower(Cauliflower) is still green.BroccoliAre broccoli and green cauliflower more worth eating? Although they look similar and taste delicious, their nutritional components are significantly different.Only by understanding the differences and choosing according to one's own needs can one effectively supplement nutrition.

This article will use verifiable data to compare common claims one by one:Are they the same vegetable? Which one has a higher or lower nutritional content? Where do the antioxidants come from? How should they be cooked to best preserve them? And are the commonly cited claims that "broccoli is several times more nutritious" and "a 2019 Science study confirmed its anti-cancer properties" accurate?It needs to be clarified first: this article only discusses the nutritional role of both in a balanced diet.This does not constitute advice for the diagnosis, treatment, or prevention of any disease.。

Are cauliflower and broccoli the same vegetable?

This is the most common mistake made online. Many articles state that "the two belong to different varieties of vegetables," but the more accurate statement is:Cauliflower and broccoli actually belong to the same species—cabbage (Brassica napus).Brassica oleraceaThey are simply different "cultivar groups".

Botanically, through long-term artificial breeding, the species *Brassica oleracea* has given rise to a whole family of vegetables with vastly different appearances: cauliflower, broccoli, cauliflower florets, Chinese kale, collard greens, Brussels sprouts, kohlrabi, etc., all of which are different cultivated groups of the same species.Broccoli (Italica) cultivars, Cauliflower (Botrytis) cultivarsThe two are very closely related (some classifications also group broccoli into the Botrytis group). They both originate from plants known for their "anti-cancer potential."BrassicaceaeIt is derived from wild cabbage through mutation and artificial selection.

Therefore, it is inaccurate to say that they are "different species of the same family"—they areSame family, same species, but different cultivation groupsThis distinction, seemingly academic, actually determines how we understand the following nutritional comparisons: precisely because they are closely related and have similar component types,The difference between the two is mostly in the "content level" rather than the "presence or absence" of the substance.(The only exception is Vitamin A, see the next section).

For a more comprehensive understanding of the cabbage family members and their conversions, please refer to the website's <Six food groups and a balanced diet〉。

Name and appearance: How to distinguish between the two?

In terms of appearanceBoth look like "a bouquet of flowers" at first glance, but the details are different:CauliflowerThe flower head is composed of dense and shortened flower branches, and the whole flower is a tight white "cloud" shape. The flower buds are densely stacked and individual flower particles are almost indistinguishable.BroccoliThe flower heads are composed of looser green buds, with individual buds and more prominent stems visible, giving them a more "layered" texture. In terms of taste, cauliflower is more delicate, with a mild flavor and a hint of sweetness, and it easily absorbs sauces; broccoli is crisper, with a slightly green and nutty aroma.

Local nameThis also needs to be clarified. Common terms of address in Hong Kong:

• Whitevariety:Cauliflower(Also written as cauliflower or cauliflower).
• greenvariety:Broccoli(In Taiwan, it is often called "green cauliflower" or "green cauliflower", while in mainland China it is often called "broccoli" or "green cauliflower".)

There's a popular claim that "broccoli is not actually green cauliflower, and it's recommended to use the standard name 'broccoli' for all."The starting point is correct, but the conclusion is open to discussion.The correct part is: Broccoli and cauliflower are indeed...Different cultivation groupsIt's inappropriate to describe it as "two colors of the same vegetable"; moreover, with the development of breeding, cauliflower now comes in orange, purple, and light green (pagoda cauliflower) varieties, so treating "white and green" as two colors of the same plant would indeed be confusing. The debatable part is:The standard name of a plant falls under the category of botany; the common name is acceptable as long as it doesn't cause misunderstanding.In Hong Kong, "cauliflower" and "broccoli" are clear and commonly used names; there's no need to uniformly change them to "green cauliflower" (that's the common name in Taiwan). The key point is...Don't treat them as the same dish.Simply identify the variety when purchasing and cooking.

Nutritional composition comparison (with data table)

The following figures are taken from the USDA FoodData Central records for "Cauliflower, raw (FDC ID 169986)" and "Broccoli, raw (FDC ID 170379)".freshAll data is presented per 100 grams. Please note:The figure for 100 grams of raw vegetables is not the same as that for "one serving of cooked vegetables".—The Centre for Health Protection converts "one serving of vegetables" to roughly half a bowl of cooked vegetables.

Nutrients (per 100 grams, raw)	White cauliflower	Broccoli	Compare
calorific value	25 kcal	34 kcal	Cauliflower is lower
protein	1.92 grams	2.82 grams	Broccoli is about 1.5 times more nutritious.
carbohydrate	4.97 grams	6.64 grams	Cauliflower is lower
Dietary fiber	2.0 grams	2.6 grams	Broccoli is about 1.3 times more nutritious.
Vitamin C	48.2 mg	89.2 mg	Broccoli is about 1.9 times more nutritious.
Vitamin K.	15.5 micrograms	101.6 micrograms	Broccoli is about 6.6 times more nutritious.
Vitamin A (RAE)	0 micrograms	31 micrograms	Cauliflower: 0
beta-carotene	0 micrograms	361 micrograms	Cauliflower: 0
Vitamin E	0.08 mg	0.78 mg	Broccoli is about 9.8 times more nutritious.
folate	57 micrograms	63 micrograms	Roughly the same
choline	44.3 mg	18.7 mg	Cauliflower is about 2.4 times larger.
鈣	22 mg	47 mg	Broccoli approximately 2.1 times
鐵	0.42 mg	0.73 mg	Broccoli is about 1.7 times more nutritious.
鎂	15 mg	21 mg	Broccoli is about 1.4 times more nutritious.
鉀	299 mg	316 mg	Roughly the same
硒	0.6 micrograms	2.5 micrograms	Broccoli is about 4.2 times more nutritious.

As can be seen from the table,The statement "Broccoli wins at everything" is incorrect.Broccoli is significantly higher in several vitamins (C, K, E) and minerals (calcium, iron, selenium), with the difference in vitamin E and selenium being several times higher; however,Cauliflower actually has about 2.4 times higher levels of choline.Vitamin B6, potassium, and folic acid are roughly the same as in broccoli. The most noteworthy difference is:White cauliflower contains 0% beta-carotene and 0% vitamin A.Only orange varieties contain beta-carotene.

In other words: if your goal isVitamins C, K, E, calcium, selenium, or sulforaphaneBroccoli has an advantage; if you care aboutcholineor wantLower calories, lower calorie densityCauliflower is another easy-to-eat vegetable, and it's just as good.Instead of arguing about who is "stronger," let's take turns eating them.

Where are the antioxidants?

The antioxidant components of both mainly come from a common class of sulfur-containing compounds—GlucosinolatesWhen vegetables are chopped or chewed, the cells inside...MyrosinaseIt will come into contact with glucosinolates and decompose intoIsothiocyanates與IndolesAnd other substances. Broccoli has attracted much research attention.sulforaphaneIt is one of the isothiocyanates; andIndole-3-methanol (I3C)It belongs to the indole class and is derived from the decomposition of glucobrassicin, a type of glucosinolate.

Here we need to correct a common ingredient misplacement.Many rewritten drafts state that "cruciferous vegetables contain anti-cancer components (such as polysaccharides)"."Polysaccharides" are mainly components of mushrooms (such as shiitake mushrooms and reishi mushrooms).Cruciferous vegetables are not the main focus of nutritional research on cancer-related components.Glucosides → Isothiocyanates (such as sulforaphane)與IndolesThis pathway (see Higdon et al., 2007, and Šamec et al. reviews). Referring to it as "polysaccharide" conflates components of two different vegetables.

In addition, the Brassicaceae family also providesVitamin C, Vitamin E, carotenoids (green varieties), and polyphenolsIt contains antioxidant nutrients. These components have a synergistic effect, which is one of the reasons why "eating whole vegetables" is more advisable than "taking single-extract supplements".

Examining common sayings item by item

Articles introducing these two vegetables often cite several studies. The following section verifies each study against its original source, explaining which findings are valid and which require revision.

Claim 1: "In 2019, a Harvard University team confirmed in the journal Science that I3C contained in cruciferous vegetables can inhibit the growth of cancer cells."

Upon investigation, the 2019 issue of *Science* (…)ScienceThis study is not found in the journal.The same year's tumor-related paper in the same journal (Lee et al., 2019, on the MYC-WWP1 mechanism of the PTEN tumor suppression pathway, PMID 31097636) was completely unrelated to cruciferous vegetables. This belongs to...Misattribution—Confusing research from different sources.

Does I3C have any evidence of cancer suppression? Yes, but...Currently, evidence primarily comes from cell and animal experiments; human evidence remains limited.For example, a mouse prostate cancer xenograft study found that adding I3C to the diet significantly inhibited tumor growth and altered the gut microbiota (Wu et al., *Nutrients*, 2019, PMID 30813350). Such results help in understanding the mechanisms, but...This cannot be directly extrapolated to the human body.This is even less true than claiming that "eating cauliflower or broccoli can prevent cancer." The plain way to put it is:Both are vegetables worth eating more of. The anti-cancer mechanisms of their components are still under investigation. Food cannot replace any formal treatment or screening.

Claim 2: "A 2012 study showed that diabetic patients who consumed 10 grams of broccoli sprout powder daily experienced a significant reduction in cholesterol and triglycerides after 4 weeks."

This studyIt roughly exists, but needs to be refined.The original article is a randomized, double-blind, placebo-controlled trial (2012, PMID 22325157) published in *Diabetes Research and Clinical Practice* by Bahadoran et al.: 81 patients with type 2 diabetes were divided into three groups: 10 grams daily, 5 grams daily, and a placebo, for a period of 4 weeks. ResultsThe 10-gram group showed a significant decrease in triglycerides, the oxidized LDL/LDL ratio, and the atherosclerotic index (AIP), while HDL levels were also higher.However, it should be noted that:There were no significant differences in total cholesterol, LDL, total cholesterol/HDL ratio, and LDL/HDL ratio.Furthermore, the study had a small sample size and was conducted at a single center. Therefore, the accurate statement is that "broccoli sprout powder had a positive effect on some blood lipid indicators in a small-scale trial," rather than "cholesterol was reduced across the board."

Claim 3: "The content of these nutrients in broccoli is generally several times higher than that in cauliflower."

Partially correct, but both "generally" and "several times" are exaggerations.According to the table above, broccoli is indeed...Vitamin E (approximately 9.8 times), Vitamin K (approximately 6.6 times), Selenium (approximately 4.2 times)Some items showed significantly higher levels; however, the differences in many other items were actually not that significant (vitamin C was about 1.9 times higher, and folic acid and potassium were roughly the same), whileCholine levels in cauliflower are approximately 2.4 times higher.Therefore, the statement that it is "generally several times higher" is inaccurate.We should compare them item by item, rather than saying in general that "broccoli wins in every aspect".

Claim 4: "Both contain antioxidant vitamins such as vitamins A, B, C, and E."

Corrections needed:White cauliflower does not provide vitamin A.(Both beta-carotene and vitamin A are 0). The product containing beta-carotene (a precursor to vitamin A) is...Green broccoli and orange cauliflowerB, C, and E are indeed present in white cauliflower (with E content being relatively low).

Statement 5: "Most of the anti-cancer components in both are water-soluble and will be lost when boiled. It is recommended to stir-fry them in oil or steam them in an electric cooker."

The direction is roughly correct, but it needs to be refined.Glucosinosides are water-soluble.Prolonged boiling will cause these substances to dissolve into the cooking water. A classic study using LC-MS/MS to measure glucosinolates in broccoli, Brussels sprouts, cauliflower, and cabbage found...Steaming, microwaving, and stir-frying cause almost no significant water loss, while boiling results in significant water loss, with about 90% of the loss occurring in the cooking water.(Song & Thornalley, Food and Chemical Toxicology, 2007, PMID 17011103).

but"Stir-fryThis is not ideal—high temperatures and prolonged exposure may still cause some components to degrade, and it also increases the amount of oil needed. A more ideal approach is...Steam, microwave, or stir-fry for a short timeIf boiling is desired, minimize the time and amount of water, and consider consuming the broth as well. Furthermore, chopped food will lose some nutrients if left for an extended period (same study: up to 75% can be lost within 6 hours of chopping).Cut and cook as soon as possible。

How to cook to best retain nutrients?

Based on the above research and the recommendations of the Centre for Food Safety, several principles can be summarized:

• Mainly steamed, microwaved, or stir-fried for a short timeThese three methods minimize the destruction and loss of glucosinolates while retaining more vitamin C.
• Avoid prolonged boilingGlucosinosides and vitamin C are water-soluble and will dissolve in water when boiled; if boiling is necessary, it is advisable to...Shorten time and reduce water usage。
• Cut and cook immediatelyOnce chopped, black mustard enzymes begin to work, and components are lost over time, so avoid leaving it chopped for several hours.
• To improve the bioavailability of sulforaphaneBroccoli can be usedChop and let sit for a few minutes before cooking.This allows myrosinase time to convert glucosinolates into isothiocyanates; a small amount of mustard seeds (containing myrosinase) can also be added to aid the conversion. Additionally, a moderate amount of oil helps with the absorption of fat-soluble vitamins K and E.
• It is safer to cook thoroughly.The Centre for Food Safety advises pregnant women, the elderly, and people with weakened immune systems to avoid eating raw vegetables in order to reduce the risk of infection.
• Reduce odorThe strong odor of cruciferous vegetables comes from the breakdown products of glucosinolates. Shortening the cooking time, covering the pot, or adding a few drops of lemon juice/vinegar can reduce it.

Which one should I choose? Choose according to your needs.

Both are high-quality vegetables that are low in calories and high in fiber.There is no need to choose one of the two.You can emphasize different aspects as needed:

Your goal	Can be given priority	reason
Supplement with vitamins C, K, E, calcium, selenium, and sulforaphane.	Broccoli	High in multiple vitamins and minerals
Supplement with choline and vitamin A (beta-carotene).	Cauliflower (orange variety)	Orange cauliflower contains beta-carotene; white cauliflower has a higher choline content.
Looking for the lowest-calorie, low-carb alternative to staple foods?	White cauliflower	It's relatively low in calories and carbohydrates, so it can be made into "cauliflower rice".
I like crisp textures and stir-fried side dishes.	Broccoli	Crisp texture, resistant to stir-frying
I like the smooth texture and the way it absorbs sauce.	Cauliflower	It has a smooth texture and a mild taste.

Two useful tips: 1.Both can be cooked together.For example, dishes like "stir-fried broccoli and cauliflower" or "garlic broccoli and cauliflower" provide different nutrients in one meal, making it more comprehensive than eating only one type. Secondly,Don't just eat these two kinds of vegetables.Dark green leafy vegetables (such as kale and spinach) are often richer in folic acid and beta-carotene. Following the Department of Health's "Two Plus Three Daily" recommendation (at least two servings of fruit and three servings of vegetables daily) for a diverse diet is the key to a balanced intake. For related low-carb and portion control concepts, please refer to the website's [link/section].Waist circumference is a better indicator of metabolic risk than weight.>and<Causes of constipation, dietary care, and timing of seeking medical attentionTo learn more about the 7 major benefits of cauliflower as a single ingredient and how to preserve it, please read the article on this site.Nutritional and health benefits of cauliflower〉。

What precautions should be taken when consuming it?

Flatulence and Irritable Bowel Syndrome (IBS)

Both contain sulfur compounds and mannitol from FODMAPs (fermentable carbohydrates). Consuming large quantities at once can cause bloating, flatulence, or even abdominal discomfort in some people, especially those with sensitive stomachs or irritable bowel syndrome. Recommendations:Start with small portions, cook thoroughly, and avoid eating too much at once.In addition, adequate hydration is essential. The Centre for Health Protection also reminds the public that increasing dietary fiber should be done gradually, and at least 6 to 8 cups of fluids should be consumed daily; otherwise, diarrhea, bloating, or flatulence may occur. For strict control of FODMAP, refer to the FODMAP information from Monash University in Australia and consult a registered dietitian.

thyroid function

The glucosinolates contained in cruciferous vegetables, inIodine deficiencyIn some cases, this could theoretically affect thyroid function. However, for people with normal iodine intake, the amount consumed in cooked food daily is generally not a cause for concern. The key to protecting the thyroid is...Get enough iodineThe Centre for Food Safety recommends obtaining iodine from sources such as seafood, shellfish, dairy products, and iodized salt, and using methods like steaming or quick stir-frying with minimal oil to reduce iodine loss during cooking. If you have thyroid disease or are currently taking thyroid medication (such as levothyroxine), consult your doctor before adjusting your diet.

People taking warfarin (a blood thinner): Be careful with broccoli.

Following the numbers above:Broccoli contains about 101.6 micrograms of vitamin K per 100 grams, which is relatively high among vegetables; while white cauliflower contains only about 15.5 micrograms, which is relatively low.Therefore, what people taking warfarin really need to be aware of is...Broccoli (as well as spinach, kale, Brussels sprouts, and other vegetables high in vitamin K)Instead of white cauliflower, it should be cauliflower. The UK NHS warfarin diet guidelines list cauliflower as "low in vitamin K and can be eaten freely".

The point is not to give up eating a certain type of food, but...Maintain a stable intake of vitamin K.—Don’t eat a lot of vegetables one moment and not eat any at all the next; and have your INR (clotting index) checked regularly as instructed by the anticoagulation clinic.Do not drastically change your diet or stop taking medication on your own.Drinking cranberry juice or grapefruit juice may affect the efficacy of the medication and should be avoided. Any dietary adjustments should be discussed with a doctor, nurse, or pharmacist first.

other

High-fiber foods can affect the absorption of some oral medications. If you are taking medications that require an empty stomach or to be taken at regular intervals, it is advisable to separate high-fiber meals from such medications. If you have any questions, consult a pharmacist. Patients with kidney disease or those who need to restrict potassium intake should follow their doctor's instructions regarding portion sizes.

When should you consult a doctor or nutritionist?

Cauliflower and broccoli are common vegetables, and are safe for most people to eat in moderation. However, in the following situations, it is advisable to consult a doctor or registered dietitian before adjusting your diet:

• Currently taking anticoagulants (such as warfarin)It is necessary to maintain a stable intake of vitamin K and monitor INR regularly; do not increase or decrease it on your own.
• People with thyroid disease or currently taking thyroid medicationIodine intake should be considered together with that of cruciferous vegetables.
• Irritable bowel syndrome, post-gastric surgery, or those with long-term gastrointestinal discomfortHigh-fiber and FODMAP foods may worsen symptoms.
• Patients with kidney disease or those who need to restrict potassiumBoth contain potassium, and the amount should be controlled according to the instructions of medical staff.
• Cancer patients or those undergoing treatment (chemotherapy, radiation therapy)Antioxidant supplements may interact with treatment; it is advisable to consult with your oncologist regarding your diet (including food and supplements).Food cannot replace any formal medical treatment.。
• Pregnant women, breastfeeding women, the elderly, infants and young children, and people with weakened immune systemsRaw vegetables should be avoided; they should be thoroughly cooked.

In addition, cancer prevention and screening should follow medical advice (such as the Hong Kong Department of Health's colorectal cancer screening program) rather than relying on a single food. If you experience persistent discomfort or suspect related symptoms, please seek medical attention as soon as possible; in case of emergency, please call 999.

Frequently Asked Questions

Are cauliflower and broccoli the same vegetable?

They are the same species, but from different cultivation groups. Both belong to the cabbage family (Brassica napus).Brassica oleraceaThis species belongs to the Italica cultivar and the Botrytis cultivar. They are actually different cultivars of the same species as cabbage, kale, collard greens, and Brussels sprouts. Therefore, the accurate statement is "same family, same species, different cultivars," rather than "same family, different varieties."

Which one has higher nutritional value?

Each has its own strengths, so it's impossible to say which is "stronger" in general. Per 100 grams, broccoli is higher in vitamin C (about 1.9 times), vitamin K (about 6.6 times), vitamin E (about 9.8 times), selenium (about 4.2 times), and calcium (about 2.1 times); cauliflower, on the other hand, is...cholineIt has about 2.4 times the nutritional value of broccoli, and is slightly lower in calories and carbohydrates. Of the two, only broccoli (and orange cauliflower) provides vitamin A. Eating both in rotation provides a more diverse range of nutrients than eating only one.

Is broccoli the same as "green cauliflower"?

Not entirely. Broccoli and cauliflower belong to different cultivation groups and should not be described as "two colors of the same vegetable." Furthermore, cauliflower itself has orange, purple, and light green (pagoda cauliflower) varieties. In Hong Kong, "cauliflower" and "broccoli" are clearly interchangeable terms; the key is to identify the variety when buying and cooking, and not to mistake them for the same vegetable.

If you want to lose weight or follow a low-carb diet, which should you choose?

Both are suitable, but white cauliflower has a slight advantage—it contains only about 25 kcal and 5 grams of carbohydrates per 100 grams, lower than broccoli, and its neutral texture makes it suitable for dishes like "cauliflower rice" or "cauliflower mashed potatoes" to replace part of the main meal. However,It is not recommended to completely replace grains.Cauliflower lacks the energy and some nutrients provided by grains. A more balanced approach is to "partially replace" it (e.g., half white rice and half cauliflower rice), while retaining other whole grains and fruits and vegetables.

Can broccoli sprout powder really lower blood lipids?

A small, randomized, double-blind trial supports some of the effects: after type 2 diabetes patients consumed 10 grams of broccoli sprout powder daily for 4 weeks, triglycerides, the oxidized LDL/LDL ratio, and the atherosclerosis index significantly decreased, while HDL levels were also higher (Bahadoran et al., 2012, PMID 22325157). However, the results were not statistically significant: total cholesterol, LDL, and other indicators did not show significant differences, and the sample size was small. It is a "research direction worth noting," but not a lipid-lowering method that can replace medication.

Can I3C (indole-3-carbinol) really prevent cancer?

That's not accurate. Online sources often cite a 2019 *Science* study confirming I3C's cancer-suppressing properties, but *Science* did not publish such a study that year; it's a misattribution. Current evidence for I3C's cancer-suppressing effects primarily comes from…Cell and animal experiments(For example, in mouse prostate cancer xenograft studies, Wu et al., 2019, PMID 30813350), human evidence is limited.Cruciferous vegetables are worth eating more of, but food and its components cannot replace any cancer treatment or screening.

Which blood thinner (warfarin) should be avoided?

What needs to be noted isBroccoliBroccoli contains approximately 101.6 micrograms of vitamin K per 100 grams, which is relatively high; white cauliflower contains only about 15.5 micrograms, which is relatively low. NHS guidelines list cauliflower as a food that can be freely consumed. The key point when taking warfarin is...Maintain a stable intake of vitamin K.Do not vary the dosage drastically, and follow the instructions of the anticoagulant clinic to regularly test INR. Do not drastically change your diet or stop taking the medication on your own.

Can I eat this if I have a thyroid problem?

For typical cooked, everyday servings, people with normal iodine intake do not need to avoid any particular foods. Cruciferous vegetables mainly contain glucosinolates...Iodine deficiencyIt is only when certain conditions are present that the thyroid gland is more likely to be affected. If you have thyroid disease or are currently taking thyroid medication, you should consult your doctor before adjusting your diet (especially if you plan to significantly increase your intake of cruciferous vegetables or use related supplements). The daily focus should be on obtaining sufficient iodine through sources such as seafood, dairy products, and iodized salt.

Can they be cooked together?

Yes, and it's worth doing. For example, dishes like "Garlic Broccoli and Cauliflower Stir-fry" or "Cauliflower and Cauliflower Stir-fry with Sliced Pork" provide a more comprehensive nutritional intake by combining the higher vitamin C/K content of broccoli with the higher choline content of cauliflower in one meal. When cooking, steaming or stir-frying are recommended. Note that broccoli is more resistant to overcooking while cauliflower softens more quickly, so adding the broccoli first and then the cauliflower will result in a better texture.

How much should you eat in a day?

There is no uniform "upper limit." According to the Department of Health's "two plus three" recommendation, adults should eat at least three servings of vegetables daily.One serving is roughly equivalent to half a bowl of cooked vegetables.You can include cauliflower and broccoli as part of the meal, along with other colorful vegetables. Those with sensitive stomachs should start with small portions, cook them thoroughly, and gradually increase the amount. If you experience persistent bloating or discomfort after consuming large quantities, you can reduce the portion size or consult a nutritionist.

Data Sources and Health Disclaimer

Source:

• USDA FoodData Central.Cauliflower, raw (FDC ID 169986)、Broccoli, raw (FDC ID 170379)(The nutrient figures in the comparison table in this article are from [source]).
• Centre for Health Protection, Department of Health, Hong Kong.Healthy diet high in fiber> (Adults should consume 25 grams or more of dietary fiber daily, at least 2 servings of fruit and 3 servings of vegetables daily, and 6 to 8 cups of liquids daily).
• Centre for Health Protection, Department of Health, Hong Kong.Three servings of vegetables> (One serving of vegetables = half a bowl of cooked vegetables).
• Centre for Health Protection, Department of Health, Hong Kong.Daily Two Plus Three – Improving Adults' Daily Diet> (Methods to increase the intake of fruits and vegetables in daily diet).
• Hong Kong Centre for Food Safety. *Food Safety Focus*, Issue 223.Consuming Vegetables – Maximizing the Benefits while Minimizing the Risks> (The impact of cooking time and water usage on water-soluble nutrients; high-risk individuals should avoid eating raw vegetables).
• Hong Kong Centre for Food Safety.Iodine in food> (Iodine-rich food sources; steaming or stir-frying with minimal oil to reduce iodine loss).
• Horticulture Extension at North Carolina State University (NC State Extension).Brassica oleracea> (Classification of cabbage species and their cultivated groups, including the Italica and Botrytis groups).
• Song L, Thornalley PJ. Effect of storage, processing and cooking on glucosinolate content of Brassica vegetables. Food Chem Toxicol. 2007. PMID 17011103。
• Higdon JV et al. Cruciferous vegetables and human cancer risk: epidemiologic evidence and mechanistic basis. Pharmacol Res. 2007. PMID 17317210。
• Bahadoran Z et al. Broccoli sprouts powder could improve serum triglyceride and oxidized LDL/LDL-cholesterol ratio in type 2 diabetic patients: a randomized double-blind placebo-controlled clinical trial. Diabetes Res Clin Pract. 2012. PMID 22325157。
• Wu Y et al. Inhibition of Tumor Growth by Dietary Indole-3-Carbinol in a Prostate Cancer Xenograft Model May Be Associated with Disrupted Gut Microbial Interactions. Nutrients. 2019. PMID 30813350。
• Lee YR et al. Reactivation of PTEN tumor suppressor for cancer treatment through inhibition of a MYC-WWP1 inhibitory pathway. Science. 2019. PMID 31097636(This is to illustrate that the 2019 Science study on cancer is unrelated to cruciferous vegetables).
• Tse G, Eslick GD. Cruciferous vegetables and risk of colorectal neoplasms: a systematic review and meta-analysis. Nutr Cancer. 2014. PMID 24341734。
• Wu QJ et al. Cruciferous vegetables consumption and the risk of female lung cancer: a prospective study and a meta-analysis. Ann Oncol. 2013. PMID 23553059。
• Farvid MS et al. Fruit and vegetable consumption and breast cancer incidence: Repeated measures over 30 years of follow-up. Int J Cancer. 2019. PMID 29978479。
• Alumkal JJ et al. A phase II study of sulforaphane-rich broccoli sprout extracts in men with recurrent prostate cancer. Invest New Drugs. 2015. PMID 25431127。
• The Office of Dietary Supplements (NIH ODS) of the National Institutes of Health.Vitamin A(Functions and food sources of Vitamin A and beta-carotene).
• The Office of Dietary Supplements (NIH ODS) of the National Institutes of Health.Choline(Cholinergic function and food sources)Vitamin C(Vitamin C function and recommended intake).
• Dorset County Hospital, UK National Health Service (NHS).Dietary Advice for People Taking Warfarin Tablets> (Warfarin Dietary Guidelines: Maintain stable vitamin K intake; cauliflower is a low-vitamin K vegetable).
• Cambridge University Hospitals, part of the UK's National Health Service (NHS).Dietary advice for patients taking warfarin(Similarly, it is emphasized that vitamin K intake should be maintained consistently.)
• Monash University, Australia.Monash FODMAP(Official information on low-FODMAP diet and IBS).
• The official website of the U.S. Department of Agriculture's FoodData Central.fdc.nal.usda.gov(Food nutrition facts lookup).

Health Disclaimer:This article is for general health and nutrition information only and should not replace professional medical diagnosis, treatment, or individual nutritional advice. Everyone's constitution, health condition, and disease risk are different, and dietary adjustments should be made on an individual basis. The observational studies and animal experiments cited in this article can only show "correlation" or "mechanism," and cannot prove that a single food can prevent or treat any disease. If you have a chronic illness (heart disease, high blood pressure, kidney disease, diabetes, thyroid disease, etc.), are pregnant, breastfeeding, elderly, infant, young child, or have a weakened immune system, or are taking prescription medications (especially anticoagulants), you should consult a doctor, registered dietitian, or pharmacist before adjusting your diet. If symptoms persist or worsen, please seek medical attention as soon as possible; in case of emergency, please call 999.