What is osteoporosis? Osteoporosis is a disease in which bones become weak and are more likely to fracture or break. It is called a âsilentâ disease because bone loss often occurs without your knowing it. Until about age 30, your body forms enough new bone to replace the bone that is naturally broken down by the body (a process called bone turnover).
yinâ² and yangâ². n. (in Chinese philosophy and religion) two principles, one negative, dark, and feminine (yin), and one positive, bright, and masculine (yang), whose interaction influences the destinies of creatures and things.
a river in East China, a left tributary of the Huaiho. Length, 543 km. It flows primarily through a plain. The rate of flow varies according to the monsoonal pattern. The highest water level occurs during the summer. The Ying River is used mainly for irrigation. The cities of Chiehshou, Fuyang, and Yingshang are located along its course.