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Diets rich in Omega-3 help reduce eye disease risk,[link widoczny dla zalogowanych]
Seniors who often eat diets rich in Omega-3 are less likely to develop a serious eye disease known as age-related macular degeneration (AMD), U.S. researchers have found.
The findings were based on a fresh analysis of a one-year dietary survey conducted in the early 1990s,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], said researchers at Johns Hopkins School of Medicine.The study involved nearly 2,[link widoczny dla zalogowanych],400 seniors between the ages of 65 and 84 living in Maryland's Eastern Shore region, where fish and shellfish are eaten routinely.
After their food intake was assessed,[link widoczny dla zalogowanych], participants underwent eye exams. About 450 had AMD,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], including 68 who had an advanced stage of the disease, which can lead to severe vision impairment or blindness.The results showed that participants who often ate omega-3-rich fish and shellfish had a lower rate of AMD.
"Our study corroborates earlier findings that eating omega-3- rich fish and shellfish may protect against advanced AMD," said study lead author Sheila K. West,[link widoczny dla zalogowanych], of the Wilmer Eye Institute at the school.
"While participants in all groups,[link widoczny dla zalogowanych], including controls, averaged at least one serving of fish or shellfish per week,[link widoczny dla zalogowanych], those who had advanced AMD were significantly less likely to consume high omega- 3 fish and seafood,[link widoczny dla zalogowanych]," she said in a news release from the American Academy of Ophthalmology (AAO).
The researchers reported their findings in the December issue of Ophthalmology."It does make huge sense theoretically,[link widoczny dla zalogowanych]," commented Anand Swaroop,[link widoczny dla zalogowanych], chief of the neurobiology,[link widoczny dla zalogowanych], neuro-degeneration,[link widoczny dla zalogowanych], and repair laboratory at the U.S. National Eye Institute.
"Photoreceptors have a very high concentration of a specific type of fatty acids and lipids,[link widoczny dla zalogowanych], relative to many other cell types. So it would make sense that omega-3 consumption would be beneficial. The theory is sound."
But Swaroop said that although the correlation is important, it should be explored further. "We need larger studies with longer term follow-up before being able to properly assess the impact,[link widoczny dla zalogowanych]," he said.In the United States,[link widoczny dla zalogowanych], AMD is the major cause of blindness in whites, according to the AAO.
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