Smoking and Premature Aging

Intrinsic and extrinsic factors are involved in the skin aging process. Intrinsic aging is a slow, permanent degeneration that affects most of the body, with distinguishable characteristics such as wrinkling of the skin, cherry hemangiomas and seborrheic keratoses. Photoaging or photodamage is the most noticeable effect of extrinsic skin aging, caused by long-term solar UV light exposure. Photodamaged skin is illustrated by coarse wrinkles, dyspigmentation and telangiectasia, and is associated with malignant tumors.

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