Posts Tagged ‘beta carotene’
Lutein is one of the carotenoids that are found in many plants and animals. Other pigments in the same family include zeaxanthin, astaxanthin, lycopene, beta-carotene and alpha-carotene. Although lutein and zeaxanthin are most commonly thought to benefit the eyes, other pigments also have antioxidant activity in the human body.
During the past several years, most eye doctors or nutritionists recommended a single-ingredient lutein supplement. They think this kind of supplement is beneficial to the eyes, because lutein is most highly concentrated in the retina. And some lutein supplement promoters are airing ads on television. But latest studies have shown other results.
It is true that some earlier studies have proved the effectiveness of lutein supplement or the combination of lutein and zeaxanthin. These nutrients alone can reduce the risk of developing age-related macular degeneration. These studies have considerably promoted the prevalence of lutein supplements.
However, a recent study revealed something different. It compared the blood level of various antioxidants in people with and without macular degeneration. Researchers found that people with high levels did not have macular degeneration. The result is that the total blood levels of carotenoids offer proper protection against the disease.
Supplement products on the market are quire disappointing. A shocking fact is that some lutein supplements as well as vitamins are synthetic. These vitamins can be basically plastic. In particular, most commercial lutein products at low prices are synthetic.
As mentioned before, astaxanthin is another less common antioxidant associated with macular degeneration prevention. A wholesaler of natural astaxanthin named ALGA technologies reveals that nearly all commercial astaxanthin is made of petrochemical sources synthetically.
There is no doubt that these synthetic chemicals have no benefit to human body. But many customers are told to take these supplements on a daily basis. They believe that these lutein supplements as well as multi-vitamins are good for their health. In conclusion, natural sources of these nutrients should be chosen.
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Article Source:http://www.articlesbase.com/vision-articles/natural-nutrients-sources-are-better-1534260.html
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Your eyes and its ocular mechanism are an inherent section of your system and it needs adequate nourishment to preserve its optimum role. Although your brain and visual structure merely consist of 2% of the weight of your body, they utilize close to 25% of your nutritional uptake. Vitamins are necessary for your wellbeing, and play a crucial function to improve your eyesight. It is among the natural means to improve your eyesight without doing surgery, using eye drops or even taking medications. I have listed the vital vitamins which you should include into your diet to improve your eyesight naturally. They are:
1. Vitamin A and Beta-Carotene
Vitamin A by far is the widely known nourishment which is essential to improve eyesight. It is among the vitamins which are soluble in fats which can be found in nature in a range of classes. It is seen as retinol in animals and as for plants it is found as beta-carotene. You can get an adequate amount of Beta-carotene when you take fruits like cantaloupes and apricots. As for veggies, it can be found in spinach, carrots, broccoli, squash and pumpkins. The liver in your system has to transform the beta-carotene to retinol kind of vitamin A, only after that can be utilized to improve your eyesight. Beta-carotene and vitamin A assist your eyes in several means. Beta-carotene renders you with the antioxidant guidance from free radicals which may harm your eyes. Deficiency of adequate amount of vitamin A in your system could result to night blindness or persistent dry eyes. Consuming too much quantity of Vitamin A through an extended length of time can be harmful to your system. Now you know that Vitamin A can help improve your eyesight.
2. Vitamin B-complex
B-complex is a range of vitamins which are usually soluble in water, meaning it can not be stocked in your system. As a result of this, it is necessary to complement your system with foods rich in vitamin b-complex every single day. Though Vitamin B-Complex ought to be consumed as a whole, every one of complex-B vitamins possesses its respective and distinctive roles. One of them is referred to as vitamin B2, or simply called riboflavin. It is adequate for appropriate cellular respiration and keeping good oxygen stages all over the body. Riboflavin performs a crucial function in the avoidance of eye diseases like cataracts and other forms of eyes problems. The eye’s signs of lack of riboflavin in your body usually consists of burning eyes, too much eye tearing, vision disruption, eye tiredness, eroding vision, feeling of sand-like particles in the eyelids, distended pupils and the rest of others. The sources of vitamin B-complex which you should take to improve your eyesight are potatoes, bananas, chile peppers, beans, liver oil, turkey, tuna, marmite, vegemite, and lentils.
3. Get Vision without glasses
Vision without Glasses is a step by step guide which has the naturally tested and proven methods to improve your eyesight from the comfort of your home without eyeglasses. It contains the exercises, diets, do’s and don’ts which you require to improve your eyesight naturally. I highly recommend you to get it if you need a clearer vision. See more about it at Vision without Glasses Review
Article Source:http://www.articlesbase.com/vision-articles/how-to-improve-your-eyesight-1354632.html
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Macular degeneration can cause irreversible vision loss. Although there is no effective cure of AMD, a variety of prevention measures are available to reduce the risk of AMD, especially for older people.
The University of Manchester said that smokers are up to four times more likely than non-smokers to suffer AMD. For old people, it is a necessity to stop smoking.
People consuming many vegetables rich in carotenoids are reported to have a 43% lower risk of AMD than those seldom eat these foods. These vegetables include dark, leafy greens, especially raw spinach, kale and collard greens.
Older people can not absorb enough nutrients from diet alone, so that nutritional supplements including vitamins and minerals are useful to improve eye health.
For people at high risk of developing advanced AMD, the Age-Related Eye Disease Study (AREDS) has found that nutrients play a key role in maintaining their current vision. The formula of nutrients recommended by AREDS includes vitamin C and E, beta-carotene, zinc oxide and cupric oxide. The study shows that this formula can lower the risk of advanced AMD by 25%. But for smokers, AREDS recommends other nutritional formulas that exclude beta-carotene, which may increases the risk of lung cancer among smokers. Some researchers also oppose formulas with high-dose vitamin E, while others just eliminate its tiny risk.
The British Journal of Ophthalmology has conducted a study of 4000 old people, which showed that regular exercise such as walking can bring down the risk of AMD.
Both Massachusetts Eye and Ear Infirmary and the University of Sydney have revealed that high consumption of fish reduces the risk of AMD.
Both Harvard Medical School and the Massachusetts Eye and Ear Infirmary have demonstrated that AMD can be decreased by daily fruits and nuts eating.
High glycemic index in refined foods causes a rapid increase in blood sugar and insulin release, which in turn increase the risk of AMD. So that the old should take low glycemic index foods, such as fruits, brown rice, grain breads, apple juice and carrot juice. High index foods including white bread, white rolls and donuts should be reduced.
Cumulative eye damage caused by overexposure to UV and HEV lights are estimated to arouse AMD, so that you’d better to wear sunglasses outdoors.
Cholesterol built-up in blood vessels can inhibit blood flow, which is harmful for healthy eye tissue. In this case, cholesterol controlling can protect the old from AMD. Since high blood pressure is also indicated to have link to AMD, blood pressure controlling is necessary.
Early detection and treatment of AMD can minimize the risk of vision loss caused by ADM. People between 45 and 60 are recommended to take an eye exam every two or three years, and people above 60 should take an exam every year.
this article is come from:http://vision.firmoo.com/eye-diseases/various-ways-prevent-amd.html
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Macular degeneration can cause irreversible vision loss. Although there is no effective cure of AMD, a variety of prevention measures are available to reduce the risk of AMD, especially for older people.
The University of Manchester said that smokers are up to four times more likely than non-smokers to suffer AMD. For old people, it is a necessity to stop smoking.
People consuming many vegetables rich in carotenoids are reported to have a 43% lower risk of AMD than those seldom eat these foods. These vegetables include dark, leafy greens, especially raw spinach, kale and collard greens.
Older people can not absorb enough nutrients from diet alone, so that nutritional supplements including vitamins and minerals are useful to improve eye health.
For people at high risk of developing advanced AMD, the Age-Related Eye Disease Study (AREDS) has found that nutrients play a key role in maintaining their current vision. The formula of nutrients recommended by AREDS includes vitamin C and E, beta-carotene, zinc oxide and cupric oxide. The study shows that this formula can lower the risk of advanced AMD by 25%. But for smokers, AREDS recommends other nutritional formulas that exclude beta-carotene, which may increases the risk of lung cancer among smokers. Some researchers also oppose formulas with high-dose vitamin E, while others just eliminate its tiny risk.
The British Journal of Ophthalmology has conducted a study of 4000 old people, which showed that regular exercise such as walking can bring down the risk of AMD.
Both Massachusetts Eye and Ear Infirmary and the University of Sydney have revealed that high consumption of fish reduces the risk of AMD.
Both Harvard Medical School and the Massachusetts Eye and Ear Infirmary have demonstrated that AMD can be decreased by daily fruits and nuts eating.
High glycemic index in refined foods causes a rapid increase in blood sugar and insulin release, which in turn increase the risk of AMD. So that the old should take low glycemic index foods, such as fruits, brown rice, grain breads, apple juice and carrot juice. High index foods including white bread, white rolls and donuts should be reduced.
Cumulative eye damage caused by overexposure to UV and HEV lights are estimated to arouse AMD, so that you’d better to wear sunglasses outdoors.
Cholesterol built-up in blood vessels can inhibit blood flow, which is harmful for healthy eye tissue. In this case, cholesterol controlling can protect the old from AMD. Since high blood pressure is also indicated to have link to AMD, blood pressure controlling is necessary.
Early detection and treatment of AMD can minimize the risk of vision loss caused by ADM. People between 45 and 60 are recommended to take an eye exam every two or three years, and people above 60 should take an exam every year.
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Eyes are one of the most important parts of our body. We all want to have bright and healthy eyes. However, you know what! Something in our everyday life is hurting our eyes. What is it? Let’s just have a look.
Alcohol
Alcohol hurts our eyes most. You may have found that our eyes will turn red and our body temperature goes high when we drink too much. That is because Alcohol can promote blood circulation and make capillary inflation. If we drink a lot, the blood vessels around our eyes which are very small will be easily broken and it hurts our eyes very much.
Tobacco
When we smoke, burning tobacco smoke inside the tar reduces vitamin B12 which is the necessary nutrient maintaining the normal function of the optic nerve. According to a survey conducted by WHO, 20% of the patients who get cataract are due to long-term smoking. Besides, scientific research has made it clear that tobacco can also cause wrinkles around the eyes. In addition, the second-hand smoke also does harm to our health and appearance. So let’s be away from tobacco.
Excessive Isolation
Too much ultraviolet radiation causes eye wrinkles, Cataracts and other eye diseases. Therefore, when we are out on a burning day, we should and must wear a pair of sunglasses to protect our eyes.
Improper Dieting
Improper dieting also hurts eyes. A research indicates that fresh vegetables and fruits rich in vitamin E, vitamin C, beta-carotene and zinc can prevent certain eye diseases and wrinkles, etc. When we are on a diet, we must increase the intake of fruits and vegetables.
Lack of Sleep
Some of us always have a lot of work to do. Sometimes, we even have to keep working till midnight and continue to work at eight the next morning. That’s to say our eyes can only rest for less than 7 eyes. As a result it is easy for our eyes to get tired. What’s worse, they will also suffer from the pouch and wrinkles. Therefore, take every chance to have just a short rest.
Eyes are compared to the window of our heart. If your eyes get hurt, how can you enjoy the beauty of the world? So what I want to say is please keep away from all above aspects and keep your eyes healthy.
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