Kale is a cruciferous vegetable loved by health-conscious eaters for its nutrient profile, health benefits and exceptional flavor. Considered the “queen of greens,” this leafy superfood is chock-full of vitamins, minerals and antioxidants that help prevent cancer.
According to a 2009 review, compounds in kale get converted into anti-cancer nutrients when ingested or when the kale plant is under attack. Researchers found that these nutrients help prevent tumor growth in several areas of the body, including the breasts, prostate, mouth, colon and kidney.
Cruciferous vegetables like kale and broccoli are rich sources of the compounds isothiocyanates and indoles. Both isothiocyanates and indoles form when a molecule of water breaks down glucosinolates, which are compounds found in cruciferous veggies. This breakdown is catalyzed by enzymes released by the plant or found in your digestive tract. It produces compounds like isothiocyanates and indoles.
Some isothiocyanates and indoles found in kale have potent anti-cancer properties. For example, studies show that sulforaphane helps prevent cancer by releasing antioxidants and detoxification enzymes that protect against carcinogens. The compound also reduces the size and number of various types of cancer cells, including those in the prostate, breasts, colon, skin, bladder and mouth.
An indole called indole-3-carbinol (I3C) is also a potent anti-cancer compound found in kale. A 2019 study found that I3C promotes a tumor-suppressing protein called PTEN. This protein’s activity usually decreases when you have cancer, but I3C restores its full power.
How you cook is just as important as what you eat because certain cooking methods, such as frying and roasting, can destroy the nutrients in vegetables.
The best way to cook kale is to steam it. Steaming makes it taste less bitter and retains higher levels of antioxidants and minerals than boiling, microwaving, pressure cooking and vacuum cooking.
You can also eat raw kale to get more of its anti-cancer nutrients. Just wash it under running water and let it come to room temperature before eating. Also, toss in crushed garlic and rub a high-quality oil, such as olive oil, onto its leaves to enhance its enzymatic activity.
Try this kale salad with carrot ginger dressing to reap the anti-cancer benefits of this superfood. This salad recipe is super healthy and flavorful. The roasted chickpeas add crunch, a rainbow of root veggies gives it vibrance and the delicious carrot ginger dressing ties it all together.
For carrot ginger dressing:
For salad:
For the dressing and chickpeas:
For the kale salad:
Kale is an incredible superfood packed with anti-cancer nutrients. Eat more of this cruciferous veggie as part of a balanced diet to reap its impressive health benefits.
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