What is Lutein?

Basic concepts:

Lutein is a widely present in vegetables, flowers, fruits and other natural substances in plants, living in "carotenoid class" family matter, now known in nature there is more than 600 carotenoids of which only about 20 species present in the human blood and tissues. Found in humans carotenoids include α-carotene, β a carrot category, cryptoxanthin, lutein, lycopene, and are not flavin. Medical experiments prove that the plant contains natural lutein is an excellent anti-oxidant in food by adding a certain amount of lutein can prevent cell aging and the aging body organs, but also the prevention of age-related macular degeneration eye vision loss and blindness caused by a series of medical studies, carotenoids have been proposed as a cancer preventive agent, life extension agents, ulcers resist agent, heart attack and coronary artery disease resist agent. Meanwhile, lutein can be used as feed additives for poultry meat and eggs coloring, but also in the food industry as a coloring agent and nutritional health.
Lutein is a human daily consumption of fruits and vegetables can be absorbed into nutrients. If the lack of lutein may be taking supplements. If you have poor digestive system of the elderly, sublingual sprays can be used to supplement lutein. As early as 1996 lutein has been added to dietary supplements. In addition, lutein may cause liver absorb excess excess burden of the daily recommended dosage is about 6 mg. No human studies have shown that consumption of lutein can prevent eye diseases, eye diseases prevention really need to rely on a regular basis to avoid excessive use of the eyes and the eyes to rest, before eating lutein consultation with an ophthalmologist.

Differences:

Still unknown lutein and lutein ester functional differences between. It has been reported that lutein esters low bioavailability. A variety of green leafy vegetables such as spinach, mustard greens, lettuce, broccoli, melon, radish, corn and so contains a very large amount of lutein, normal balanced diet supplements can be taken more than the amount.

Lutein effects:

Lutein is an important antioxidant, the carotenoid family (group of plants found in the natural fat-soluble pigments), a member, known as "plant progesterone", zeaxanthin in nature co-exist with .
⑴ main retinal pigment ingredient: Lutein and zeaxanthin constitutes vegetables, fruits, flowers and other plant pigments main component, but also the human retinal macular area * main pigment. The human eye contains high levels of lutein, this element can not be manufactured by the body and must be supplemented by the intake of lutein, if the lack of this element, the eyes will blindness.
⑵ protect your eyes from light damage, slow aging and prevent eye disease: the sun's UV rays and blue light entering the eye will produce a large number of free radicals, leading to cataracts, macular degeneration, and even cancer. Cornea and lens UV generally be filtered out, but they can penetrate the eye directly to Blu-ray and macular retina, macula lutein is able to filter out blue light, blue light to avoid damage to the eyes. Outer macular region particularly vulnerable to fat oxidation sun damage, so this area prone to degradation.
⑶ antioxidant that helps prevent aging body caused by cardiovascular sclerosis, coronary heart disease and cancer diseases.
⑷ protect eyesight: lutein as an antioxidant and photoprotective effect, can promote retinal cells rhodopsin (Rhodopsin) re-generation, can prevent severe myopia and retinal detachment, and can improve vision, protect eyesight. Particularly suitable for students, drivers, and human consumption.
⑸ relieve the symptoms of fatigue; (blurred vision, dry eyes, eye swelling, eye pain, photophobia, etc.)
⑹ increase macular pigment density, protecting the macula, macular promote development;
⑺ prevent macular degeneration and retinitis pigmentosa;
⑻ reduce the generation of drusen to prevent the occurrence of AMD;

Lutein effect:

Protect eyesight
Lutein in the macula of the retina has an important protective role, the lack of easily cause macular degeneration and blurred vision. Further deterioration in visual acuity, myopia and other symptoms. Lutein is the precursor of VA in the human body can be converted to VA. Lutein for the eyes of the main physiological function is to act as antioxidants and light protection. Optic non-renewable, highly vulnerable to harmful free radical damage, antioxidant lutein can inhibit the formation of harmful free radicals. Lutein can absorb a large number of blue, blue wavelengths of visible light and ultraviolet light close to the visible light can reach the retina in a light most potentially harmful. In sensitive cells on the retina before the light go through the highest lutein gathering area, then if, as the macula lutein-rich will be able to minimize such damage.
The role of antioxidant

Lutein has strong antioxidant, can inhibit the activity of ROS, reactive oxygen species to prevent damage to normal cells. For experiments show that reactive oxygen species with DNA, proteins, lipids react undercut their physiological functions, and thus cause such as cancer, arteriosclerosis, degeneration of aging in chronic diseases such as yellow magic place. Lutein can be quenched by physical or chemical inactivation of the role of singlet oxygen, thereby protecting the body from injury, enhance the body immunity.
Reduce the incidence of cataracts

Cataracts are the leading cause of blindness worldwide major eye diseases, the latest studies have shown that by increasing the intake of lutein can achieve the purpose of birth rate, currently considered the mechanism to lower macular pigment density and higher in the elderly lens closely related to the visual density, and the higher density of the lens is considered to be visually obvious features of cataract.
Retard atherosclerosis effect

Recent research results show that lutein on early atherosclerosis process has delayed effect. Main trunk artery intima-media thickness changes in blood relationship between lutein content. Low levels of lutein in the blood, can easily cause arterial wall thickening, with lutein content increased gradually reduced tendency to arterial wall thickening, arterial thrombosis was also significantly reduced. Meanwhile, the leaf cells of the arterial wall can reduce the yellow index of LDL cholesterol oxidation.
Anticancer


Lutein:

Several studies have shown that lutein can inhibit a variety of cancers, such as breast cancer, prostate cancer, colorectal cancer, skin cancer. According to a recent New York University School of drugs in reducing the incidence of breast cancer and lutein intake has a very close relationship between the survey found that lutein intake experimental group with low incidence of breast cancer is the intake high levels of group (2.08 - 2.21) times. This effect may involve coordination with other organs indirect immune regulation. The study concluded that the dietary intake of lutein can not only inhibit neoplasms can even play a preventive role in tumorigenesis. Relevant agencies recommended daily intake per capita 400 g ~ 600 g of fruits and vegetables can make the relative risk of cancer by 50%.

The role of retinal degeneration
Retinitis pigmentosa (RP) is a chronic, progressive, hereditary, malnutrition, Retinitis Pigmentosa. Early symptoms of night blindness RP only and do not affect the work, like night blindness often appears in childhood, as the disease progresses, the dark suitable capacity degradation, photophobia, vision quietly dropped, reduced vision, and finally tubular vision and blindness, is called "not cancer cancer." RP including retinitis pigmentosa, crystalline retinitis pigmentosa, retinitis pigmentosa white spots and non-pigmented retinitis pigmentosa. RP lesions mainly neurosensory retina, especially those responsible for the dark light rod cells for vision degeneration, night blindness, followed by progressive retinal atrophy from outer to inner layers of tissue, associated gliosis. RPE degeneration and hyperplasia also occurred, visible depigmentation or accumulation of migration to the inner retina. Retinal vascular wall thickening occurs hyaline degeneration and even complete occlusion of the lumen. Can have different degrees of choroidal sclerosis, complete or partial disappearance of capillaries. Atrophy of the optic nerve can be completely, depending on the ribs often gliosis, forming membrane block, and retinal glial membrane connected inside. Harvard Eye disease case management team age-related macular degeneration (AMD) and retinitis pigmentosa (RP) and the relationship between the intake of lutein been studied, patients were divided into three groups, respectively, daily intake 30mg, 10mg , 3mg less lutein. Lutein 30mg daily intake of 140 days had, retinal pigment average increase of 20 to 40%, age-related macular degeneration (AMD) and retinitis pigmentosa (RP) lesions were significantly increased visual acuity. The intake of 30mg group and 3mg following group, the two groups differ cure rate of 86%. Visible, lutein supplementation can increase the retinal pigment density, improve vision in patients with RP, the RP to improve treatment rates.
Prevention retinopathy

Diabetic retinopathy is caused by the invasion of hyperglycemia long eye retinal capillary circulation disorders: stagnant blood flow, tissue hypoxia, brittle capillary wall degeneration, retinal posterior pole retinal capillary hemangioma appears, point-like or sheet spotting, cotton wool exudate, causing vision loss. If not treated in time, the lesions will be further developed. Retina of the eye due to lack of oxygen produce new blood vessels, can cause vitreous hemorrhage, reproduction retinopathy, traction retinal detachment, secondary glaucoma, leading to blindness. Lutein, zeaxanthin can significantly improve vascular resistance and restore the balance of blood osmotic pressure loss, decrease vascular permeability, inhibit vascular leakage of material, to ensure the integrity of the eye blood vessels, so that the eye receive adequate blood supply . And eyes and can prevent free radical damage to the collagen binding protein, collagen structure to enhance the retina, thereby improving various retinal diseases (such as: diabetic retinopathy, retinitis pigmentation, hemorrhagic and hypertensive retinopathy, macular degeneration and the like) treatment rates, improved recovery therefore lead to loss of vision.


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