SIGN IN   Advanced Search

Browse Endocrinology
Bones in Balance

Thirty-first monthly installment of our "What A Year!" website project, introducing life science breakthroughs to middle and high school students and their teachers. Our bones change throughout our lives, building and increasing in density to our 30's and then decreasing in density thereafter. People who don't get exercise, such as those who must remain in bed for long periods of time, can suffer early osteoporosis. But why don't bears, who hibernate for half a year, experience the same problem?

Database error: Invalid SQL: SELECT * FROM ratings WHERE record_id= 23518
MySQL Error: 145 (Table './BEN_live/ratings' is marked as crashed and should be repaired)
Session halted.