How One Drink Could Protect Your Eyesight

By , Category : Diabetes Tips

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Green tea is a rich source of the polyphenol epigallocatechin gallate, or EGCG.The association between vision and diabetes is not too well-known, but it’s definitely one to be aware of. Diabetes is a disease primarily caused by insulin resistance, of course, but along with blood sugar problems, diabetes can also affect the retinas of the eyes. Diabetic retinopathy, as the condition is called, is the most common reason for blindness in American adults.

The disease starts by attacking the light-sensitive tissues in the back of your eyes. Blood vessels inside the retinas become inflamed and start leaking fluid. This is one scenario. Another type of retinopathy involves abnormal blood vessels growing exactly where they shouldn’t be: on the surface of the retina.

The disease may creep in slowly, but eventually it starts to cause vision loss. Unfortunately, the condition targets both eyes at once. At first, the blood vessels in your retina are starved of their blood supply. When your retina sends signals for your body to grow replacement blood vessels, the new ones are weaker and often abnormal.

Obviously, this eye disease is a huge concern for many diabetics. The good health news in all of this is that researchers have discovered that a breakfast beverage—green tea—could play a significant role in helping to prevent retinopathy. Green tea is a rich source of the polyphenol epigallocatechin gallate, or EGCG.

PLUS: Protect your vision with these two nutrients

When tested in rats, green tea protected the retina from glutamate toxicity. Glutamate is a neurotransmitter that can damage and destroy nerve cells by over-stimulating them. It was the antioxidants in green tea, including EGCG, which triggered this protective effect.

You can also protect your eyesight by eating lots of healing foods that contain two substances called lutein and zeaxanthin. These two carotenoids are found in abundance in fruits and vegetables.

And finally, make sure you monitor your blood sugar. It can get tedious and tiring to keep track of blood sugar levels day in and day out. That being said, the more stable your blood sugar levels are, the less likely you are to suffer from the complications of diabetes such as retinopathy and vision loss.

Source(s) for Today’s Article:
Silva, K.C., et al., “Green tea is neuroprotective in diabetic retinopathy,” Invest Ophthalmol Vis Sci. February 15, 2013; 54(2): 1,325-36.




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Dr. Victor Marchione, MD

About the Author, Browse Victor's Articles

Victor Marchione, MD received his Bachelor of Science Degree in 1973 and his Medical Degree from the University of Messina in 1981. He has been licensed and practicing medicine in New York and New Jersey for over 20 years. Dr. Marchione is a respected leader in the field of smoking cessation and pulmonary medicine. He has been featured on ABC News and World Report, CBS Evening News and the NBC Today Show and is the editor of the popular The... Read Full Bio »