As we age, our skin changes. That's a simple, basic concept. The details of how our skin changes, on the other hand, are far more complex. Researchers have studied aging skin in detail, and have identified a number of specific features of our skin that change with age. Age and sun exposure play a large role in the development of these signs of aging skin. The foods we eat also play a role. Certain foods help prevent the development of fine lines and wrinkles, while other food