Green leafy vegetable intake lessens risk of glaucoma

Washington D.C., Jan. 15 (ANI): A recent study says that leafy vegetables such as lettuce, spinach and kale and nitrate-rich vegetables are associated with lowering the risk of primary open-angle glaucoma by 20 to 30 percent.

Glaucoma is a condition which can affect sight, usually due to build up of pressure within the eye because fluid cannot drain away.

This new study found people who ate a nitrate-rich diet had lower levels of primary open-angle glaucoma (POAG), a rare condition which involves chronic or acute sudden painful build-up of pressure in the eye.

The researchers followed up participants biennially in the prospective cohorts of the Nurses’ Health Study (63,893 women; 1984-2012) and the Health Professionals Follow-up Study (41,094 men; 1986-2012). Eligible participants were 40 years or older, were free of POAG, and reported eye examinations. Information on diet was updated with questionnaires.

During follow-up, 1,483 incident cases of POAG were identified. Participants were divided into quintiles (one of five groups) of dietary nitrate intake (quintile 5, approximately 240 mg/d; quintile 1, approximately 80 mg/d). 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).

The study has been published in JAMA Ophthalmology. (ANI)

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