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Want vegetables packed with nutrients? Look no further than the brassica family. Cruciferous vegetables, which include things like broccoli, cauliflower, cabbage, bok choy, and even rutabaga, are some of the most nutrient-rich powerhouses you can feed your body. These delicious and nutritious veggies should hold a permanent, starring role on your plate; try eating them at least five times per week to help prevent cancer, lower cholesterol, and more.
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Which Vegetables Are Cruciferous?The list of cruciferous vegetables is long and extensive. Some of the more commonly consumed cruciferous vegetables include:
- Bok choy
- Brussels sprouts
- Collard greens
Health Benefits of Cruciferous Vegetables: Vitamins, Minerals, Antioxidants
Cruciferous vegetables offer some incredible health-promoting qualities due to the many important nutrients that are packed into each serving of these superfoods. In fact, studies show that dark green, leafy vegetables like cruciferous vegetables rate highest in tests measuring nutrient density. Cruciferous veggies are very high in vitamin C, vitamin E, vitamin K, folate, selenium, glucosinolates, flavonoids, polyphenols, and much more.[2-7]
Cruciferous vegetables contain several nutrients that have a whole host of beneficial effects in the body, including anti-inflammatory, antioxidant, antibacterial, antifungal, neuroprotective, hypoglycemic, and lipid-lowering effects.[2,3,8,9] And this translates into some pretty remarkable results, especially in terms of cancer and heart disease prevention.
Let’s take a closer look at how they work:
- Cancer: There have been several studies linking high cruciferous vegetable intake to lower rates of cancer, as well as higher rates of cancer survival.[3,10] Some of the particular types of cancers affected include lung, ovarian, breast, and prostate.[4,11-14] Cruciferous vegetables may be more effective at protecting against cancer in some people compared to others, due to genetic factors.
Cruciferous vegetables contain glucosinolate, which degrades into isothyocionates, strong antioxidants known to fight cancer in numerous ways. They seem to help detoxify carcinogenic compounds before they can do damage in the first place, alter cell-signaling pathways that lead to cancerous cell proliferation, impact epigenetic regulation (newly discovered as an important factor in cancer prevention), and lower inflammation.[3,4]
- Heart disease: Cruciferous vegetable intake also seems to help lower the risk of heart disease, partly because these vegetables are great cholesterol-lowering foods. They are high in fiber and are potent sources of antioxidants. Additionally, compounds in cruciferous vegetables bind to bile acids, which is important for cholesterol control. Bile is used to help digest and absorb fats that we eat. When cruciferous vegetables bind these bile acids, they are excreted from the body. To replace the lost bile acids, our bodies must use cholesterol stores, which helps lower our cholesterol levels.
Studies have shown that intake of certain cruciferous vegetables, such as kale, cabbage, broccoli, and more, can improve cholesterol scores. For example, in one study, men with high cholesterol who supplemented with 120 mL of kale juice daily for 12 weeks saw a 10 percent reduction in LDL (bad) cholesterol and a 27 percent increase in HDL (good) cholesterol.
Cruciferous Vegetables: Recommended Intake
Researchers recommend eating at least five servings of these tasty superfoods per week. The most nutrient-dense parts of these vegetables tend to be the florets (like the flowering head of broccoli), although the leaves and stalks are healthy choices as well. The darker and more colorful the veggies are, the higher the antioxidant capacity as well. Try purple cabbage or kale to get the most out of your servings.
So get started piling broccoli, bok choy, kale, cabbage, and more onto your plate today. Fortunately, the Brassica family is quite versatile; try making a fresh cabbage coleslaw, roasted broccoli and cauliflower with herbs and oil, a green smoothie with kale, bok choy stir fry, and much, much more. Below, we offer two recipes to get you started.
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Originally published in 2015, this post is regularly updated.