To study the impact diet has on cataracts, researchers tracked the progression of the condition in 324 pairs of twins in the UK.
For 10 years, they kept track of the women's intake of vitamins A, B, C, D and E. They also tracked their intake of copper, manganese and zinc.
The women who ingested more vitamin C initially had a 20 percent reduced risk of developing cataracts. After 10 years, the risk decreased by 33 percent.
The researchers noted that there was little risk reduction in the women who took vitamin supplements. Instead, the preventative effects appeared to be obtained only by eating foods rich in vitamin C.
The researchers estimated genetic factors account for 35 percent of the difference in cataract progression. Environment and lifestyle account for 65 percent.
https://www.healthline.com/health-ne...k-of-cataracts
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