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For the first time, researchers have been able to link "specific food intake patterns with substantial AMD risk reductions". They used the data from the AREDS (Age-related Eye Disease Study) research, which included about 4,000 patients.
The scientists looked at the foods eaten by the AREDS participants and measured for vitamins C and E, zinc, lutein, zeaxanthin, omega-3 fatty acids (DHA and EPA). Foods that provide these nutrients include dark green leafy vegetables, citrus fruits and cold water fish. Interestingly, beta-carotene did not affect risk levels in this analysis.
In combination with these, they assessed foods with a low glycemic index (GI). A food's GI value is based on how fast its carbohydrates raise the body's blood sugar levels; low GI foods have less impact on blood sugar fluctuations. Foods with a low GI include whole grains and nuts. High GI foods are processed and sweetened foods, like baked goods, crackers, cookies, etc. The researchers, from the Laboratory for Nutrition and Vision Research and Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, note that more clinical trials are needed to validate this data. However, study after study has revealed the importance of a diet high in plant foods and fish. A better diet really does seem to be the key to health. "Dietary Compound Score and Risk of Age-Related Macular Degeneration in the Age-Related Eye Disease Study". Chung-Jung Chiu, DDS, PhD et al. Ophthalmology, Vol 116, pgs. 939-946. May 2009. |
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