Twins and Aging: How Not to Look Old

A study of identical twins reveals the myriad environmental factors that make us look older — or, less frequently, younger — than our age

It's a question surely as old as vanity itself: How can you look young forever? A forthcoming study in the journal Plastic and Reconstructive Surgery offers one surprising idea: as you age, don't be afraid to put on a few pounds. Fat, it turns out, can significantly smooth out wrinkles and give you a younger-looking face. (Read "Beth Teitell: On Not Looking Old.")

The authors of the new study, a team led by Dr. Bahman Guyuron of Case Western Reserve University in Cleveland, are plastic surgeons who study faces for a...

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