Eat oily fish weekly to protect eyesightAugust 9th, 2008 - 11:42 am ICT by IANS
Washington, Aug 9 (IANS) Eating oily fish once a week may reduce age-related macular degeneration which is the major cause of blindness and poor vision in adults in western countries and the third highest cause of global blindness, according to a study. There are two types of age-related macular dengeneration (AMD), wet and dry. Wet AMD is the main cause of vision loss. A team of researchers across seven European countries, coordinated by London School of Hygiene & Tropical Medicine, sought to investigate the association between fish intake and omega 3 fatty acids with wet AMD, comparing people with wet AMD with controls.
Participants were interviewed about their dietary habits including how much fish they ate and what type. Information on the main omega 3 fatty acids (DHA) and (EPA) was obtained by linking dietary data with food composition tables.
The findings show that people who habitually consume oily fish at least once a week compared with less than once a week are 50 percent less likely to have wet AMD. There was no benefit from consumption of non oily white fish.
There was a strong inverse association between levels of DHA and EPA and wet AMD. People in the top 25 percent of DHA and EPA levels (300 mg per day and above) were 70 percent less likely to have wet AMD.
Astrid Fletcher of the London school, who led the study, commented “this is the first study in Europeans to show a beneficial association on wet AMD from the consumption of oily fish and is consistent with results from studies in the USA and Australia.
“Two or three ounce servings a week of oily fish, such as salmon, tuna or mackerel, provides about 500 mg of DHA and EPA per day.”
The research team is not, however, recommending omega 3 supplements as the study did not investigate whether supplements would have the same benefit as dietary sources.
The findings have been published in Friday’s issue of the American Journal of Clinical
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