Our Featured Guest Writer Today is Paula Spencer Scott, Senior Editor at Caring.com
Nearly everyone knows that aging eyes need brighter light to read or even see. Now it turns out that bright indoor light, or better yet, bright sunlight, helps the body regulate all kinds of internal mechanisms influencing overall health. Older adults' eyes have a role in things as seemingly-unrelated to them as memory and depression, reports Laurie Tarkan in The New York Times.
Here's why: As we get older, the eye's lens gradually yellows and the pupil narrows. So less sunlight reaches key cells in the retina that regulate the circadian rhythm system, the body's exquisite internal clock.
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