Premature aging refers to the appearance of aging signs, such as wrinkles, fine lines, and sagging skin, at an earlier age than expected. This can be influenced by various factors, including genetics, environmental exposure, and lifestyle choices. For instance, excessive sun exposure can damage the skin, leading to early aging. Additionally, habits like smoking and poor diet can accelerate the aging process. Stress and lack of sleep also contribute to premature aging by affecting the body's ability to repair itself. Understanding these factors can help individuals take preventive measures to maintain a youthful appearance longer.