Omega-3 fatty acids linked to lower myopia risk in children, Hong Kong study finds
By
FollowingTheDao
Crackling crust, pillowy middle. The kind of bagel that earns a second cup of coffee.
Summary
A population-based study of 1,005 Chinese children aged 6-8 years from the Hong Kong Children Eye Study found that dietary intake of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) is a protective factor against myopia development. Children with the highest ω-3 PUFA intake had shorter axial lengths and more positive spherical equivalent refractions compared to those with the lowest intake. Conversely, higher intake of saturated fatty acids (SFA) was associated with longer axial length, indicating a risk factor for myopia. The associations remained significant after adjusting for age, sex, BMI, near-work time, outdoor time, and parental myopia history. No other dietary nutrients showed significant associations with myopia.
Key quotes
· 5 pulledAL was longest in the lowest quartile group of ω-3 PUFAs intake, compared with the highest (adjusted mean (95% CI), 23.29 (23.17 to 23.40) mm vs 23.08 (22.96 to 23.19) mm, p=0.01; p-trend=0.02)
AL was longest in the highest quartile group of saturated fatty acids (SFA) intake, compared with the lowest (23.30 (23.17 to 23.42) mm vs 23.13 (23.01 to 23.24) mm, p=0.05; p-trend=0.04)
A lower intake of ω-3 PUFAs was associated with myopia (p-trend=0.006)
Intake of ω-3 PUFAs is a protective factor against myopia, while higher SFA intake is a risk factor.
Our findings indicated a possible effect of diet on myopia, of which ω-3 PUFAs intake may play a protective role against myopia development in children.
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