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Abstract
Since the last century, human civilization has witnessed a silent revolution, unseen and unheard by many. Although its impact is subtle, it is of utmost significant to everyone. The biggest achievement of the last century was greater longevity that has resulted in an increasing aging population worldwide. A man ages continuously through an irreversible biological process, socially as perceived by the members of the society, economically by retiring from the workforce and chronologically with the passage of time. The survival of an increasing number of people beyond their traditional adult role causes population aging.