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Numerous theories have been proposed seeking to explain what causes the baggy lower eyelids that come with aging. Now, researchers have determined that fat expansion in the eye socket is the primary culprit.
The study is the first to examine the anatomy of multiple subjects to determine what happens to the lower eyelid with age. It is also the first face-aging study that uses high-resolution magnetic resonance imaging (MRI).
The study looked at MRIs of 40 subjects (17 males and 23 females) between the ages of 12 and 80. The findings showed that the lower eyelid tissue increased with age, and that the largest contributor to this size increase was fat increase.