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What foods should I eat to keep my skin looking young?

—Elizabeth Schneider, New York City

Bobbi: My derm told me that studies show people who eat vitamin-C-rich fruits and vegetables have fewer wrinkles—so load up on things like oranges, grapefruits, cauliflower, and broccoli. These foods are high in antioxidants to help fight the aging effects of sun, pollution, and time. She also said omega-3 fatty acids (think salmon and walnuts) will improve skin's elasticity. And don't forget to drink a lot of water; it's the number-one way I keep my skin looking its best.

Next: I have oily skin. Should I moisturize my face?