CHEM 181 Lecture Notes - Lecture 16: Hip Fracture, Short Stature, Osteoporosis

• School: McGill University
• Department: Chemistry
• Course: CHEM 181
• Professor: Mitchell Huot

Document Summary

Discovered in 1883 that the body needs ca2+ for nerve impulses function. Recommended amounts will depend on the country and age. Increasing during major growing years (1g / day) Women: they intake much less calcium than men. For women, fractures are a more severe issue. Many fractures are related to low calcium levels: Resorption (loss of bone mass overall) for post menopausal women: 1-5% per year. At 5% per year, half the bone mass is gone in 14 years. An osteoporotic bone looks weak (has holes in it and is disintegrating) Decrease of hip mass = increase of fractures. Consequences of hip fractures (due to complications of hospitalization): Take the number 70 and divide by the percent change per year. The result is the length of time t will take to either double or halve (depending whether the change is a decrease or increase) the amount of bone loss.