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Bok Choy Anti Cancer Properties  

 

Bok Choy

Bok Choy is one of many Chinese cabbage varieties original Asia, and was introduced to the US by Chinese who participated in the great gold rush in the late nineteenth century. Its veined leaves are dark green and have a taste less pronounced than that of cabbage. It looks like Swiss chard. Its whitish stems are sweet, juicy and crunchy. Bok Choy, which is part of the great family of crucifers, contains a multitude of vitamins and minerals as well as active compounds which have many health properties.  

 

This vegetable is very nutritious. It is an excellent source of vitamins A, K and C, as well as vitamins B2, B6, and folate (vitamin B9), which is involved in the production of all cells in the body, including red blood cells. Folate is also essential in the production of genetic material (DNA, RNA), in the functioning of the nervous system and immune system, as well as in the healing of wounds and sores. 

 

Bok Choy and Lung Cancer 

 

Studies have shown a link between Chinese cabbage consumption and reduced risk of certain cancers. In a recent study conducted in China, subjects consuming the highest amounts of Bok Choy (more than 27 kg per year) had 50% lower risk of lung cancer than those who consumed the least (less than 18 kg per year). Note that in this study, the same type of association was obtained with some other vegetables like carrots, celery and chives. 

 

Bok Choy and Prostate Cancer  

 

In a large study (more than 100 000 subjects), individuals consuming Chinese cabbage almost daily running 50% lower risk of urinary tract cancer than those who consumed less than one to two times per month. A similar trend is observed in other studies evaluating the consumption of Bok Choy and the impact of different types of cancer: prostate, gastrointestinal, brain. As these results only come from observational studies and that they target different types of cancers, it is not possible to establish cause and effect. In addition, the quantities of Bok Choy consumed in these studies were difficult to determine accurately. 

 

Bok Choy Cancer Prevention 

 

Several epidemiological studies have shown that high consumption of fruits and vegetables decreased the risk of certain cancers and other chronic diseases. Although many mechanisms of action have been proposed to explain this preventive effect, the main factor remains the presence of antioxidants in the fruits and vegetables. Regarding cruciferous vegetables (broccoli, cauliflower, cabbage, Chinese cabbage, etc.), research argue that regular consumption could help prevent many cancers such as lung, pancreas, ovary and kidney. It seems however that this preventive effect is not the same in all individuals. It may be due to genetic factors or just lifestyle.  

 

Different active compounds in Bok Choy play a role in cancer prevention, among them include glucosinolates and antioxidants. 

 

Glucosinolates. These compounds are found primarily in cruciferous. They are biologically inactive, but when the food undergoes physical transformations (chewing), glucosinolates come into contact with an enzyme called myrosinase. They are then transformed into active molecules such as isothiocyanates and indoles. Isothiocyanates, in particular, help to limit the development of cancer in humans. However, cooking reduces the activity of myrosinase, which in theory would reduce the possibility of transforming the glucosinolate active compounds. However, the intestinal bacterial flora may also convert glucosinolates, which partially offset the loss of myrosinase in cooked food. So ideally, eating the vegetable raw, lightly cooked in little water or jumped, is better.  

 

Antioxidants. Antioxidants are compounds that protect the cells of body from damage caused by free radicals, highly reactive molecules that are involved in the development of cardiovascular disease, certain cancers and other diseases related to aging. Bok Choy contains phenolic compounds as well as carotenoids. The amounts of total phenolics in the vegetable are comparable to those of pepper, parsley and parsnips, but lower than the carrot, eggplant, red cabbage and some lettuce. The main phenolic compounds in all Chinese cabbage varieties are various types of flavonoids and sinapinic acid (or sinapic acid). Studies show that although Chinese cabbage contains less phenolic its antioxidant capacity seems to be more resistant in the body to certain treatments that tend to damage the health cells.  

 

In addition, all Chinese cabbages, including Bok Choy, contain significant amounts of carotenoids, particularly in the form of beta carotene. Carotenoids are compounds which also possess antioxidant properties. In general, consumption of foods rich in carotenoids is linked to a lower risk of developing certain cancers. A 100g serving of Chinese cabbage contains 1400 mcg to 2600 mcg of beta-carotene. In comparison, carrot, recognized as one of the best sources of beta carotene, contains more than 4000 micrograms. 

 

When Chinese cabbage is cooked in water it loses up to 7% of its content in beta carotene. In the body, beta carotene has the ability to turn into vitamin A. It is observed that carotenoids, including beta-carotene, are better absorbed in the organism when a small amount of lipids (fats) is consumed at the same time. It is therefore appropriate to consume, for example, Chinese cabbage with a hint of healthy oil such as olive oil or hempseed oil. 

 



 

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