essentiallyears are inin mobile as evevery hibernatg bebear i is for fiveve-seven mo yet they do not get osteoporosis. their bones don't thin. there are the only mammal that does not get osteoporosis with prolonged immobility. if we were in mobile for f five months, if we were hospitalized or paralyzed, we would lose one- third of our bone mass. mobobility, the balance shifts to losising bone. osteoporosis. this is an enormous public health problem in the united states and the rest of the world. 70,000 people bought in this country every year, costing the u.s. economy $18 billion a year. one-third of women over 65, post menopausal women, will have a fracture not caused by injury, but caused by osteoporosis. polar bearsrs and other hihibernatining bears havave susubstances in t their blood tt prevent that from gettiting osteteoporosis. another thing about p plar bears -- they don't urinate for five- seven months or longer. yet they don't get toxic. if we don't get rid of ouour urinary waste for a few days, we are dead. ende is no treatment for stage renal disease or renal failure. the