Kale contains a number of bioactive components, vitamins and minerals which, with daily intake, strengthen your health [1]
Underneath you will find scientific evidence for our claims:
Greenkale, like other leafy green vegetables, contains many powerful antioxidants, including vitamin C, beta-carotene, as well as various phytochemicals [2]. Antioxidants are substances that help balance the immune system by preventing and counteracting oxidative damage. [3]. In Greenkale the two phytochemicals quercetin and kaempferol are found in major quantities.[4]. In fact, Greenkale has the higher antioxidant activity than potato, tomato, green bean, spinach, broccoli and rhubarb [5], as well as cauliflower, cabbage and brussels sprouts [6].
Oxidative damage is thought to be one of the leading causes of aging and many other health problems, e.g. high blood pressure, inflammatory conditions, atherosclerosis (hardening of the blood vessels), diabetes, heart disease, cancer, and neurodegenerative diseases like Parkinson’s and Alzheimer’s [7].
With excellent antioxidant activity, Greenkale can help you balance your immunity, repair damaged cells, relieve fatigue, protect your cardiovascular system, and slow down the aging process in a natural way.
There are two types of cholesterol in your body, HDL cholesterol and LDL cholesterol. LDL is often referred to as the ‘bad’ cholesterol, it can build up plague on the walls of your blood vessels, narrowing the vessels, and the blood can barely go through. This can happen anywhere in your body, and when blood flow to the heart is blocked, you will suffer angina (chest pain) or a heart attack. HDL is often called “good” cholesterol, it protects against heart disease by acting as a scavenger, taking the “bad” cholesterol out of your blood [8].
The high content of fiber and phytochemicals in Greenkale may contribute to lower cholesterol levels. Greenkale is found to have highest potential on lowering cholesterol and the risk of heart disease among various vegetables, including spinach, brussels sprouts, broccoli, mustard greens, cabbage, green bell peppers, collards [9]. In fact, one study found that drinking Greenkale juice every day for 12 weeks increased HDL cholesterol by 27% and lowered LDL levels by 10%, thus reduced the risk of heart disease, and at the same time, it improved antioxidant status of the body [10].
In addition, Greenkale is rich in potassium and various vitamins e.g. vitamin C, which also helps maintain normal blood pressure and better heart health. According to a published review, scientists compared different vegetables for their cardiovascular benefits, and concluded that intake of leafy green and cruciferous vegetables (Greenkale belongs to this family) may confer strong cardiovascular health benefits [11].
Greenkale is very low in calories, but very high in dietary fiber, bioactive compounds, vitamins and minerals, which make it a great addition to a weight loss diet or diabetic diet.
Overweight people have a high risk of type-2 diabetes, the more common type of diabetes, also known as ‘insulin resistant’ diabetes. Insulin is the protein in your body to maintain normal blood glucose level. When you get type 2 diabetes, your body loses the sensitivity to insulin thus cannot react as normal, and your blood glucose level will be persistently high and subsequently increase risk of high blood pressure and various heart and kidney diseases [12].
Dietary fiber is the most important nutrient when it comes to losing weight. Studies have shown that it will make you feel full without increasing energy intake, thus a great tool for weight control and prevention of overweight. High fiber intake also contributes to stabilize your blood glucose level, thus lower the risk of diabetes. [13].
Moreover, scientists found recently that the phytochemicals from Greenkale help body to produce the important protein called GLP-1, which not only makes you feel full, but also improve your insulin sensitivity, enabling prevention of overweight and type 2 diabetes. [14].
Due to its high calcium and vitamin K content, Greenkale has been listed as one of the “good-for-your-bones” foods. The benefits of Greenkale on bone health are very valuable for elderly people, especially menopausal women.
Calcium is the main component of your bones and teeth, and it is also very important to keep your body functioning. Adequate calcium intake benefits people in all ages, especially children and elderly people. Children need calcium to build bones for their growing body, while elderly people need it to keep their bone structure healthy.
Bones in your body are actually renewing constantly, old bone structures are removed and replaced by new bone-cells.. If you do not have enough calcium from diet, there will be no material for building new bones. Over time, bone-structure in your body will become less dense and very fragile, and more prone to fractures, which is called osteoporosis. Postmenopausal women will typically experience acute and dramatic bone mass loss, and are most vulnerable to osteoporosis, but elderly men are also at risk – they are also losing bone mass, just in a slower speed [15].
Greenkale is a rich source of calcium, providing great help in preventing osteoporosis. Milk is often thought as the best food source for calcium, but in fact Greenkale contains more calcium than milk per gram, and the calcium from Greenkale is also much easier for body to absorb and use [16]. Besides, some people are vegetarian, or do not like milk, or are just lactose intolerant. If you are one of them, Greenkale will be a good choice for your daily calcium needs.
Kale is also rich in vitamin K, a vitamin that is also very important for preventing bone loss. Vitamin K helps your body absorb calcium from diet, and reduce calcium excretion from urine. Studies showed that inadequate intake of vitamin K will lead to a higher risk of bone fracture, and vitamin K supplementation helps maintain bone health in postmenopausal women [17]. By taking Greenkale, you can get sufficient calcium and vitamin K at the same time, thus give you a better bone health. In fact, one study found that taking Greenkale juice once a day for 24 months stabilized bone mass in menopausal women, thus suggest use Greenkale as an important option for prevent osteoporosis [18].
Modern life sometimes brings eye issues. Your eyes get tired easily if you stare for long periods at a computer, smartphone, or game console. These digital devices force your eyes to work harder than usual as you have to focus on tiny words and tend to blink less. When your eyes get tired, you may experience dry/watery eyes, red/itchy/irritated eyes, light sensitivity, eye twitching, blurred or double vision, or headaches [19]. Fortunately, Greenkale is packed with large amount of beta-carotene, which can be converted to vitamin A in your body to help preventing and relieving tired eyes.
Eyes are particularly sensitive to vitamin A imbalance. A low food intake of vitamin A may lead to a series of eye problems, even blindness, along with a weak resistance to infection. The most vulnerable individuals to vitamin A deficiency are children and pregnant women [20]. Compared to other vegetables like broccoli, cabbage, cauliflower and Brussels sprouts, Greenkale provides the highest contents of beta-carotene that can be converted to vitamin in your body [21]. Therefore, eating Greenkale is a good choice for people in high risk of vitamin A deficiency, as well as people sufferering from tired eyes.
AMD
On the other hand, one of the most common consequences of aging is that eyesight gets worse. Age-related macular degeneration (AMD) is a leading cause of blindness in elderly people. It is a degenerative disease of the retina, which accounts for slowly progressive visual impairment. Lutein and zeaxanthin are the predominant carotenoids found in your eyes. They act as ‘inner sunglasses’ to protect your retina from the damage caused by light, especially blue light. Evidence suggests that higher dietary intake of lutein and zeaxanthin protects against AMD [22].
Luckily, Greenkale is an excellent source of lutein [23], and its lutein contents are much higher than other vegetables including paprika, lettuce and cabbage [24]. Indeed, one study found taking Greenkale extract for 4 weeks significantly increased the lutein and zeaxanthin level in the retina, and improve the ability to reduce the blue light damage [25].
Greenkale and other vegetables in its family are traditionally used for treating gut problems. Due to its high content of fiber, it may contribute to gut health like gastric and peptic ulcers, as well as inflammatory bowel disease (IBD) [26].
The high content of potassium makes Greenkale juice very suitable for electrolyte supplement before and after exercise. The abundant vitamin C has high antioxidant activity, which helps reduce oxidative damage after exercise and improve fast recovery from tiredness. In addition, Greenkale is low in calorie and has a low glycemic index, thus will not bring extra energy intake. In a word, Greenkale is a healthy food that fits well with your exercise plan.
Vitamin C is found in high concentrations in skin, it helps with collagen synthesis and acts as antioxidant to protect the skin against UV-damage [27]. Vitamin A can accelerate skin wound healing [28]. The high content of vitamin A and C, together with many other abundant vitamins and minerals in Greenkale, may help maintain skin and hair health [29].
Greenkale is low in calorie and contains almost no fat. It is also a food with very low glycemic index, which means that your blood glucose level will not increase very much after eating it. Clinical trials have shown that low glycemic index diets improve glycemic control in diabetes, increase insulin sensitivity, reduce body weight, and reduce serum LDL-cholesterol level. [1].
Therefore, eating Greenkale is helpful not only to those who want to keep slim, but also to people suffer from diabetes and high cholesterol.
Greenkale is rich in dietary fiber [2]. Fiber is first known by its effect on relieve constipation, but then it is found that high fiber diet can help with [3]:
Greenkale is a rich source of vitamin A (beta-carotene), vitamin C, vitamin K, folate, riboflavin, calcium, potassium and manganese [4, 5] , and the content of these nutrients are higher than other cruciferous vegetables, such as broccoli, cauliflower, collards, cabbage, Brussels sprouts [6]. It also contains lots of other dietary vitamins and minerals that are necessary for your body.
Actually, Greenkale contains a large amount of beta-carotene. Beta-carotene is pro-vitamin A, which can be converted to vitamin A in your body. The content of vitamin A in food is often calculated from its beta-carotene content, and expressed as vitamin A equivalence. Vitamin A helps your eyes to maintain normal vision [7], accelerates wound healing of skin [8], and also help you to keep a healthy immune system [9].
Greenkale is also extremely rich in vitamin K. It provides over 30% of your daily needs by just one serving. This vitamin is essential for normal blood clotting and bone health, thus gives you strong bones [10].
It plays important roles in the biological reactions in your body. It is an antioxidant and neuroprotective nutrient. It helps with a wide array of health diseases like Parkinson disease, migraine, multiple sclerosis, anemia, cancer, hyperglycemia, hypertension, diabetes, and oxidative stress [11].
The most important function of potassium is to maintain the fluid balance and normal blood pressure in your body. Too little potassium in your diet will cause your body to retain water, which increases blood pressure and may lead to kidney stones. It is also important for your nervous system, and regulates muscle and heart contractions, protest against stroke. [12]
It is an essential dietary element that is required for diverse biological activity in your body, involved in nutrient metabolism, bone formation, and particularly in neurological disease [13].
Greenkale is extremely rich in vitamin C, higher than most other vegetables. Vitamin C is also called ascorbic acid because it is essential to prevent scurvy, and it is key in maintaining normal body function. It is one of the most potent antioxidants in your body [14], and can protect your body from oxidative stress, make you recover faster from diseases and tiredness, and help to prevent heart diseases, stroke and cancer. [15, 16]. Normal skin also contains high concentrations of vitamin C, it stimulates collagen synthesis and acts as antioxidant to protect the skin against UV-damage [17].
Folate is an essential nutrient for health, growth and reproduction. Especially, it can prevent neural tube defects in babies during pregnancy [18].
Greenkale not only contains more calcium than milk per gram, the calcium from Greenkale is also much easier for body to absorb and use [19]. Calcium is the material for building your bones and teeth, and it helps them as well as your muscles stay strong. It is very important for normal bone growth of children, and for the prevention of osteoporosis in post-menopausal women as well as elderly man. [20, 21].
Besides numerous essential vitamins and minerals, Greenkale also contains high levels of health-promoting phytochemicals (chemicals from plant) including carotenoids, polyphenols and glucosinolates [22]. These phytochemicals are linked to many powerful health benefits.
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