Old people have [[limited]] regenerative [[abilities]] and are more prone to [[disease]], syndromes, and sickness than younger adults. For the [[biology]] of ageing, see [http://en.wikipedia.org/wiki/Senescence senescence]. The medical [[study]] of the aging [[process]] is [http://en.wikipedia.org/wiki/Gerontology gerontology], and the study of diseases that afflict the elderly is [http://en.wikipedia.org/wiki/Geriatrics geriatrics]. | Old people have [[limited]] regenerative [[abilities]] and are more prone to [[disease]], syndromes, and sickness than younger adults. For the [[biology]] of ageing, see [http://en.wikipedia.org/wiki/Senescence senescence]. The medical [[study]] of the aging [[process]] is [http://en.wikipedia.org/wiki/Gerontology gerontology], and the study of diseases that afflict the elderly is [http://en.wikipedia.org/wiki/Geriatrics geriatrics]. |