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julia488qa
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Joined: 17 Mar 2011
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Location: England
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jordan spizike What the Bleep We Know About Catara |
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Low levels of beta carotene increase cataract risk 7 fold. Beta carotene may act as a filter, absorbing high energy photons, protecting against photo-oxidation of the lens. Beta carotene is the primary scavenger of singlet oxygen free radicals and is used to treat photosensitivities. Decreased plasma levels of beta carotene are linked to increased risk of both cortical and subcapsular cataracts. In one study, over 50,000 registered nurses who took in more vitamin A through both diet and supplements than 80% of the women in the group showed 39% less cataract risk than the women with intakes in the lowest 20% of the group. Increased beta carotene intake is associated with decreased risk of cataract and increased visual acuity with and without glasses (at 20 mg/day). A dosage range from 10,000 to 25,000 and even 200,000 IU daily of beta carotene has been recommended. Vitamin A has also been suggested at a level of up to 50,000 (or even 200,000) IU per day.
As we get older, there is typically a decrease in our ability to absorb and utilize nutrients. Correcting these factors with such remedies as microwater, friendly bacterial flora, digestive enzymes and homeopathics to stimulate nutrient utilization can also help us get the most out of our diet and our supplements. When possible, a nutritional program should be maintained for at least 3 to 4 months before considering cataract surgery.
Vitamin-A and Carotenoids:
Carotenoids other than beta carotene (in carrots) [link widoczny dla zalogowanych], including Lutein (in green leafy vegetables), Zeaxanthin, Lycopene (in tomatoes) and Astaxanthin (found in salmon) are increasingly being recommended for cataract prevention, as new research highlights their roles in protection against free radical damage, including that induced by exposure to UV radiation. Since beta carotene competes for absorption with other carotenoids, rotation of carotenoid foods or supplements has been suggested, especially when high levels of beta carotene or carrots (e.g. carrot juice) are being ingested.
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Lutein improves visual acuity in cataract (p < 0.005) compared to controls taking a placebo or a very low dosage of vitamin E. Glare also decreases with lutein. There was no progression of the cataracts for four of the five subjects in the lutein group, three of five in the vitamin E group and only one of five in
Antioxidants:
The clarity of the crystalline lens in the eye is one of the most important predictors of longevity. The average person suffering cataract formation only lives 5 years after cataract surgery [link widoczny dla zalogowanych], the most common surgical procedure in Medicare. What the bleep do we know about nutrition and cataractogenesis?
Free radical pathology is a major theme of cataract formation, as with most age-related and degenerative processes. Oxidation of cell membrane lipids may play an important role in cataractogenesis. Most of the nutritional components of cataract prevention and reversal are related to boosting antioxidant defenses. Taking a good optimum potency multivitamin is an important foundation for a cataract prevention program [link widoczny dla zalogowanych], since the use of multi-vitamin/mineral supplements has been identified as a preventive factor in the medical and epidemiological literature. In the early 1950's one doctor had already reported either improvement or little to no progression of cataracts in his patients who followed a nutritional prevention program including water, beneficial foods and supplements. He recommended chlorophyll (45 mg/day), vitamin C (1000 mg/day) and vitamin A (200,000 IU/day). A recent study using 26 vitamins and minerals reduced the risk of nuclear cataract by 36 to 44%. While a control group taking placebo tablets had their cataracts worsen from 20/30 to 20/40 during a 6 month study, others taking beta carotene and vitamin E experienced an initial improvement in vision, and never dropped below 20/30. Animal cataracts have also been reversed with nutritional supplements.
Nutrition in the prevention and reversal of cataracts:
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Tue 11:11, 24 May 2011 |
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