No, health products related to grape seed extract are sought after by many people, many products claim to have antioxidant effects, can play a role in lowering blood lipids, lowering cholesterol, and there are similar products claiming to have cosmetic, anti-cancer effects.
1, in fact, the main components of grape seed extract for proanthocyanidins and some phenolic substances, there is a certain antioxidant components, but its role is limited to the normal population do not have to deliberately take the relevant health products, proanthocyanidins are mainly composed of epigallocatechin, catechin and epigallocatechin gallate. It should be noted that these ingredients are not unique to grape seeds, but are also present in the skin and flesh of the grape, and the specific content may vary.
2, compared with other vegetables and fruits contain antioxidant components, the substances in the grape seed is not too special, as long as the dietary balance, can be from the food intake of some antioxidant components, and there is no need to rely specifically on the grape seed or its extracts to replenish the body's antioxidant substances.
3, eat grapes if you swallow the seeds directly, certainly can also get some of the nutrients, but the amount is very small, minimal. This is because it is very difficult to chew the seeds by chewing alone, and the amount that can be digested and absorbed by the body is even smaller, almost negligible. Therefore, there is no need to chew grape seeds in order to obtain the nutrients in them.
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There have been many experiments on grape seed extracts to inhibit cancer cells, but the conclusions all state the phrase: in vitro experiments were able to inhibit cancer cells. Zhejiang University Department of Food Science and Nutrition Professor Li Duo explained, in vitro experiments can inhibit cancer cells and in vivo can inhibit cancer cells are two completely different things. In vitro experiments can inhibit cancer cells can only show that further research can be carried out on specific cancer cells, and there is no evidence that grape seed extract can inhibit cancer cells in vivo.
Scientific Squirrel Society member Yun Wuxin introduced, British scholars conducted a grape seed extract to assist cancer patients in the second phase of clinical research, the early years of breast cancer radiotherapy volunteers were divided into two groups, a group of grape seed extract, a group of people taking a placebo. 12 months after the review, the detection of breast nodules and the appearance of the breasts, and found that there is no difference between the two groups.
Zhang Tian, a dietitian at the Clinical Nutrition Department of the Aviation General Hospital of China Medical University, said the body's cells produce a large number of oxygen free radicals every day, which are closely related to the aging of tissue cells. And the proanthocyanidins in grape seed is a natural low-toxicity antioxidant, which is widely found in the skin, shell, and seeds of plants, such as grape seed, apple skin, peanut skin, and cranberry.
Proanthocyanidins have high biological activity in the body after absorption, which can reduce free oxygen radicals in cells and improve cellular oxidative stress. Although long-term consumption of such health food has a certain antioxidant effect, but not as exaggerated as the business said.
The Chinese Academy of Sciences Institute of Museum Dr. Shi Jun, science writer, said that grapes and grape products have a certain nutritional value, but the composition of grape seed extract is more complex, there is no systematic safety research, in the current authoritative experimental results come out before, from a safe point of view, we recommend that pregnant women, mothers and children to be careful to choose and consume this grape seed health care products.
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