Green vegetable intake can cut glaucoma risk

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New York, Jan 17 (IANS) Greater intake of dietary nitrate and green leafy vegetables is associated with a 20-30 percent lower risk of primary open-angle glaucoma (POAG), according to a study.

Jae H. Kang of Brigham & Women’s Hospital and Harvard Medical School, Boston, and colleagues evaluated the association between dietary nitrate intake, derived mainly from green leafy vegetables and POAG.

They looked at a followup study involving 63,893 women and 41,094 men over a period of more than 35 years.

During the follow-up, 1,483 incident cases of POAG were identified.

The researchers found that greater intake of dietary nitrate and green leafy vegetables was associated with a 20 percent to 30 percent lower POAG risk.

The association was particularly strong (40 percent-50 percent lower risk) for POAG with early paracentral visual field loss (a subtype of POAG linked to dysfunction in blood flow autoregulation).

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POAG is caused by optic nerve damage that is chronic and progresses over time.

The findings were published in the journal JAMA Ophthalmology.

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