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Eat Oily Fish At Least Once A Week To Protect Your Eyesight In Old Age

Date:
August 11, 2008
Source:
London School of Hygiene & Tropical Medicine
Summary:
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 cause of global blindness, according to a study in the American Journal of Clinical Nutrition.

Eating oily fish once a week may reduce age-related macular degeneration (AMD) which is the major cause of blindness and poor vision in adults in western countries and the third cause of global blindness, according to a study published in the American Journal of Clinical Nutrition August 8, 2008.

There are two types of AMD, wet and dry. Of the two, wet AMD is the main cause of vision loss. A team of researchers across seven European countries and co-ordinated by the 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 (docosahexaenoicacid (DHA) and eicosapentaenoic acid (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% 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% of DHA and EPA levels (300 mg per day and above) were 70% less likely to have wet AMD.

Astrid Fletcher, Professor of Epidemiology at the London School of Hygiene & Tropical Medicine, 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 3oz 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 EUREYE study was funded by the European Commission with additional support from the Macular Disease Society UK and the Thomas Pocklington Trust.


Story Source:

The above story is based on materials provided by London School of Hygiene & Tropical Medicine. Note: Materials may be edited for content and length.


Cite This Page:

London School of Hygiene & Tropical Medicine. "Eat Oily Fish At Least Once A Week To Protect Your Eyesight In Old Age." ScienceDaily. ScienceDaily, 11 August 2008. <www.sciencedaily.com/releases/2008/08/080808104925.htm>.
London School of Hygiene & Tropical Medicine. (2008, August 11). Eat Oily Fish At Least Once A Week To Protect Your Eyesight In Old Age. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2008/08/080808104925.htm
London School of Hygiene & Tropical Medicine. "Eat Oily Fish At Least Once A Week To Protect Your Eyesight In Old Age." ScienceDaily. www.sciencedaily.com/releases/2008/08/080808104925.htm (accessed July 24, 2014).

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