Premature aging refers to the process in which an individual ages faster than they should due to various factors such as genetics, lifestyle choices or environmental influences. This can result in physical characteristics that are typically associated with older age appearing at a much earlier stage of life. It is often characterized by wrinkles, gray hair, and other signs of aging that appear before they should. Premature aging can also affect an individual's overall health and well-being, as the body may not be able to function properly due to age-related decline.