Antioxidant-Rich Diet Linked to Lower Risk of Eye Diseases, finds study
A new study found that intake of antioxidants would reduce the risk of several eye diseases, such as diabetic retinopathy, cataracts, glaucoma, and macular degeneration. The study compared data from the National Health and Nutrition Examination Survey (NHANES) concluded that those with higher Composite Dietary Antioxidant Index (CDAI) scores had significantly reduced risks of having eye conditions. These results imply that a diet high in antioxidants could be responsible for preserving vision and preventing vision loss. The study was conducted by Jiechang Z. and colleagues published in the journal BMC Public Health.
An estimated 2.2 billion people worldwide have some form of visual impairment or blindness. Past studies have shown that antioxidants are protective for the eyes but not directly linked with the risk of eye disease. The CDAI combines six major antioxidants to yield a measure of overall dietary antioxidant consumption.
The research compared data from 1,706 adults aged 40 years and older who were involved in NHANES 2005–2008. Trained interviewers administered interviews to evaluate diet intake with a 24-hour diet recall procedure, and CDAI was computed with a validated method. Eye conditions such as diabetic retinopathy, cataract, glaucoma, and macular degeneration were diagnosed by clinical exams and questionnaires of the participants. Multinomial logistic regression was used to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) with adjustment for potential confounders including age, sex, smoking status, and comorbid health conditions.
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