<unk>  consists of<unk> s nearing or surpassing the average life span of human beings, and thus the end of the human life cycle. Euphemisms and terms for<unk> er people include seniors — chiefly an American usage — or elderly. Some believe there to be prejudice against<unk> er people in Western cultures, which is one form of<unk> ism.<unk> er people have limited regenerative abilities and are more prone to disease, syndromes, and sickness than other adults. For the biology of<unk> ing, see Senescence. The medical study of the aging process is gerontology, and the study of diseases that afflict the elderly is geriatrics.
Old age
Poly drug use
Obesity
Ageing
Sedentary lifestyle
Binge drinking
Smoking
Childhood obesity