衰老与骨质丧失现已公认在衰老过程中普遍地伴有骨质丧失。Trotter等于1960年首次测量了青年、老年、男子、妇女、以及白种、黑种人的骨骼的重量/体积比例(密度),指出在衰老过程中骨质的丧失可达15%。并发现黑种人的骨骼密度较白种人者为高,男子又较妇女为高,因此白种妇女的骨骼密度在青年时已较低,而在老年时更低。 Aging and loss of bone has now been recognized as a common cause of bone loss during aging. Trotter was equal to the weight / volume ratio (density) of young, elderly, men, women, and white, black bones, measured for the first time in 1960, indicating a loss of bone mass of up to 15% during aging. And found that blacks had higher bone densities than whites and men were taller than women, so white women had lower bone densities in youth and lower in old age.