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Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans , many other animals , and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal .
Wrinkles are creases or lines that form in the skin. They’re a natural part of the aging process, though other factors can speed up or slow down wrinkle development.
[4] [5] [6] This process is known as "replicative senescence", or the Hayflick limit. Hayflick's discovery of mortal cells paved the path for the discovery and understanding of cellular aging molecular pathways. [7] Cellular senescence can be initiated by a wide variety of stress inducing factors.
The sale of purported anti-aging products such as supplements and hormone replacement is a lucrative global industry. For example, the industry that promotes the use of hormones as a treatment for consumers to slow or reverse the aging process in the US market generated about $50 billion of revenue a year in 2009. [83]
However, the aging process does not look the same for everyone. Premature aging occurs when the typical signs of growing older appear early, per the Cleveland Clinic , so your body may look or ...
Such an ageing process may include qualitative and quantitative changes and includes diminished or defective synthesis of collagen and elastin in the dermis. [citation needed] Extrinsic ageing of skin is a distinctive declination process caused by external factors, which include ultra-violet radiation, cigarette smoking, air pollution, among ...
Chronic low-grade inflammation can cause your skin to look older than it is. How do you know if you could be suffering from this issue, called inflammaging? Dermatologists offer their best advice.
Life extension strategies often study the causes of aging and try to oppose those causes in order to slow aging. Rejuvenation is the reversal of aging and thus requires a different strategy, namely repair of the damage that is associated with aging or replacement of damaged tissue with new tissue. Rejuvenation can be a means of life extension ...