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Your eyes hold the key to your true biological age, study finds
CNN
The back of your eye, called the retina, reveals a wealth of health information to doctors, and may one day show your body's true biological age, regardless of how old you are.
Dry eyes can be a sign of rheumatoid arthritis. High levels of cholesterol can cause a white, gray or blue ring to form around the colored part of your eye, called the iris. A coppery gold ring circling the iris is a key sign of Wilson's disease, a rare genetic disorder that causes copper to build up in the brain, liver and other organs, slowing poisoning the body.
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