Re: expert: why don't we buy some black eggplant peel to buy black wolfberry?
not to be harmful to
in human normal life metabolism, the cell will produce some oxygen free radicals. Under certain external factors, such as ultraviolet radiation and smoking, the number of free radicals in the body will increase. Free radicals can attack DNA, protein, fat and so on. Therefore, people believe that the free radicals in the body are the cause of aging and illness.
substances that can scavenge free radicals or prevent oxidation reactions are called antioxidants. It is not a specific substance, but a general term for all kinds of substances with antioxidant capacity. For example, vitamin A, E, beta carotene and so on.
a natural idea is, if you eat antioxidants to reduce or remove the free radicals in the body, will it delay aging and prevent disease?
this idea is very good. Indeed, some research results support this theory. For example, the addition of certain antioxidants in the online worm culture system prolongs the life span of the nematode. As a result, antioxidants have become the pet of health care products and Cosmetology. All kinds of synthetic natural antioxidants, or "natural essence" with high antioxidant content, emerge one after another.
, however, scientists seem to like to joke with the market. On the one hand, commercial propaganda is in full swing. On the other hand, scientists sometimes run out and say, "wait, this thing is not very reliable."
, such as professor Lei Xingen of Cornell University (transliteration Xingen Lei), overexpressed the antioxidants selenium and glutathione peroxidase (GPX1) in the body by gene technology, and found that excessive antioxidants have produced a negative impact on diabetes.
he questioned the practice of blindly supplemental antioxidants based on his own research and some literature, which suggested that this could lead to unknown health risks. In fact, there are many researches on the fight against oxidants. Many studies have shown that antioxidants have no legendary effects, such as the Clinical Nutrition published in February 2009, which published a summary of 22 publicly published, randomized, double-blind controlled studies, with a total participation of as many as tens of thousands of people. The conclusion does not support the "anti oxidant prevention of coronary movement". Pulse hardening "this popular legend.
a review published in the Journal of the American Medical Association in February 2007 to combat antioxidant health care products: the analysis of several antioxidants (vitamin A, E and beta carotene) did not affect mortality if they were summed up in a total of 68 studies involving more than 230 thousand people. In the study, only 47 high quality studies involving more than 180 thousand participants were analyzed. These antioxidants even slightly increased the mortality rate.
spend so much money to buy black wolfberry
to get some eggplant skin
why is the "health-care" antioxidant in the body and in the lower animals shown to be useless in the human body, and may even have side effects? Some studies have found that although antioxidants can prevent or terminate other oxidation reactions, they themselves may also be oxidized to produce harmful products. Another common reason is that some antioxidants show "health care" in a simple system, but other side effects are produced in the complex environment in the human body. The results are hard to say.
, for example, in the 2008 issue of Carcinogenesis, a study was published to investigate the anticancer effect of resveratrol. This polyphenol compound is very high in grape skins and wines, and is often used to publicize the health benefits of wine.
in cell culture experiments, this substance does inhibit human prostate cells. But when it was used in mice, it only slowed down the growth of cancer cells in the first few weeks. By the seventh week, there was no difference between the experimental group and the control group.
of course, in general, people's intake of antioxidants through food is unlikely to be "excessive". Considering the other nutrients contained in vegetables and fruits, it is a reasonable recommendation for most of the modern people to eat more vegetables and fruits. Black wolfberry, as a berry, is a good fruit as well as blueberries and blackberries.
but that does not mean that it is worth spending so much money on it. The content of anthocyanins in eggplant, blueberry, grape, cabbage, purple corn and so on is very high. Even though they are not resistant to black wolfberry in concentration, they can be eaten with great ease and pleasure, killing their opponents in total intake.
so, the most economical way to beat black wolfberry in the anthocyanin content PK is (joking): to the restaurant's chef, the eggplant skin is collected and the price is cheap.