Blueberry has magical beauty of pupil

The eye is the most important organ in human sense About 80% of knowledge and memory in the brain are acquired through the eyes Eyes are the source of most information The subtle changes of eyes are often the window to express all kinds of feelings and reflect the inner and outer beauty of human beings Therefore, eyes have the reputation of "window of the soul" Blueberry, the scientific name of blueberry, originated in North America, is one of the rare blue food on the earth The wild blueberry resources in China are mainly distributed in Daxinganling and Xiaoxinganling Daxinganling primeval forest is known as the "high cold forbidden area", where the lowest temperature is - 53 ℃, and the permafrost layer is under 70 cm underground Blueberry roots grow in permafrost all the year round, and its fruits are rich in nutrients During World War II, British Royal pilots ate blueberries every night before their missions Their combat power was significantly higher than that of their opponents Blueberries also became an indispensable breakfast food for pilots This tradition continues to this day Blueberry has been listed as one of the five health food by FAO because of its unique flavor and nutritional health function Blueberry is known as "the fruit of beautiful pupil" In modern society, with the widespread popularity of TV, car and computer, and the increase of work and life pressure, more and more eye fatigue and related eye diseases Doctors have found that most eye problems can be traced back to blood circulation problems in the eyes In diabetic patients, due to the absolute or relative lack of insulin secretion, the blood sugar concentration is too high, the internal and external osmotic pressure in the blood vessels is out of balance, the substances in the blood permeate and deposit on the retina, resulting in diabetic complications such as hemangioma of the fundus, fundus hemorrhage, dacryocystitis, glaucoma, cataract, turbid vitreous body, optic nerve atrophy Shrinkage, macular degeneration and retinal detachment Medical statistics show that 27.3% of diabetic patients will have fundus complications, and the incidence of diabetic retinopathy, which is a serious threat to vision, is 6% - 13% It can be seen that the treatment of diabetic ophthalmopathy plays an important role in diabetic patients Researchers at the U.S Department of agriculture's human nutrition center compared the antioxidant activity of more than 40 kinds of fresh fruits and vegetables, and found that blueberries had the highest antioxidant activity of all samples The antioxidative effect of blueberry can clear away the free radicals in the body, strengthen the elasticity of microvasculature, promote the blood circulation of the eyes, and have a good effect on diabetic retinopathy Blueberry anthocyanin can also effectively prevent protein oxidation, lens opacification, cataract and other diseases caused by high free radicals At the same time, it can protect eyes from fatigue, blurred vision, fear of light, dry eyes and tears caused by excessive use of eyes According to research data published in the United States and Japan in 1999, blueberry fruit extract can accelerate the regeneration of rhodopsin and improve night blindness or dark indication The powdered blueberry extract containing more than 25% anthocyanin has been used as raw materials of medical supplies In 1976, Italy was used for the first time in the manufacture of Tegens, a tablet containing 80mg anthocyanin and 125mg glycol; in 1995, France, Italy and New Zealand developed quick acting tablets successively, and these products were used as ophthalmic agents or health care drugs in Europe, and the effect was generally recognized Nowadays, eating blueberries has become a fashion in Europe and America In addition to the therapeutic and preventive effects of various ophthalmic diseases, blueberry anthocyanins also have antioxidant activity, which can clear away the free radicals that harden the blood vessel wall, enhance the flexibility of capillaries, promote the expansion and contraction of blood vessels, and prevent the rupture of blood vessels Blueberry fruit is rich in flavonoids, which can inhibit platelet coagulation, prevent thrombosis and reduce the incidence of atherosclerosis Blueberry can also improve and prevent the aging related transient amnesia Many functions of blueberry are attributed to the high content of natural pigments in the fruit Blueberries contain the highest levels of anthocyanins in all fruits and vegetables, according to a US study.