This massive study followed 3,115 people between the ages of fifty-five and eighty for an average of 9.6 years to see what the relationship was between dietary B vitamins and cataracts. . . .

Most people over sixty have some degree of cataracts, and cataracts are the most common cause of impaired vision and blindness, so finding a safe, effective way to prevent them is important. 

The first finding, at the beginning of the study, was that people who had the most B2 and B12 in their diet were less likely already to have cataracts.

At the end of the study, the researchers found that people with the highest intake of B2 had 22% lower risk of mild cataracts and 38% lower risk of moderate cataracts in the central regoin of the lens. They also had a 20% lower risk of mild cataracts at the edges of the lens.

The benefit of B12 was similar. People with the highest intake of B12 had 22% lower risk of mild cataracts and 38% lower risk of moderate cataracts in the central regoin of the lens. And they had 23% lower risk of mild cataracts at the edges of the lens.

People with the highest intake of B6 were 33% less likely to develop moderate cataracts in the central region of the lens.

Opthalmology 2015;122:1471-9

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