Vitamin C from foods Prevent Cataracts

Posted on February 23, 2012


Cataracts are opacities in the lens of the eye that can cause blindness. Turbidity is a natural process with age. Although it can be treated with cataract surgery but can be prevented.

Several studies have found people who have high levels of antioxidants in the body, including vitamin C, the risk for cataracts is lower.

However, most studies were conducted on the population in Western countries. Therefore, the researchers tried to conduct research involving respondents from developing countries like India where vitamin C adequacy rate is still low and high prevalence of cataracts.

For this study, researchers evaluated more than 5,600 adults in India aged over 60 years. The respondents were interviewed about diet and lifestyle as well as taking blood samples to measure vitamin C levels in the body.

In general, almost 73 percent of study participants with cataracts. But people who have high levels of vitamin C, the risk is reduced by 39 percent compared with people who lack vitamin.

In that study most of the respondents lack of vitamin C, almost 30 percent had a vitamin C concentrations below the lower limit of detection (less than 2 mikromoles per liter). Whereas under 11 mikromoles per liter is considered a deficiency of vitamin C.

The results of this study was published in the journal Ophtalmology. But do not conclude that the adequacy of vitamin C will prevent cataracts.

Even so, senior researcher Astrid Fletcher, said that vitamin C is an antioxidant that can protect the body from free radicals.

“Lab studies on animals showed vitamin C has an important role to protect the lens from oxidative stress,” he said.

Eyes, he says, are particularly vulnerable to oxidative stress. “Light is essential for vision, but light is also very damaging. Ultarviolet The lens absorbs radiation, the main source of oxidative stress,” he explained.

Several studies conducted in developed countries does not show the same result as in India. Fletcher argues halitu because people from these countries have good nutritional status so that an additional dose of vitamin supplements do not quite helpful.

“Vitamin C is water soluble so that the excess be easily removed. In addition, vitamin supplements is difficult to match the effects of vitamins from food,” he said.

Vitamin C-laden foods such as colored fruits, kiwi, strawberries, broccoli, tomatoes as well.

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