CHEM 181 Lecture Notes - Lecture 9: Adolf Windaus, Calcium Carbonate, Bone Density

• School: McGill University
• Department: Chemistry
• Course: CHEM 181
• Professor: Joe Schwarcz

Document Summary

Blood more complicated, x-ray, ct scan. Single-photon absorptiometry + double-photon absorptiometry = best way = noninvasive: o(cid:374) the (cid:449)(cid:396)ist (cid:272)o(cid:396)(cid:396)elates (cid:449)ell (cid:449)ith (cid:271)o(cid:374)e (cid:373)ass i(cid:374) hip. Avg risk by calculation: frax b/o age, genetics, etc. Take with meals acid secretion in stomach enhances absorp. Long-term proton pump inhibitor therapy lowers acid in stomach but hard to absorb calcium but may also inhibit osteoclast process but still 2. 65% up hip fx long term. Ca sup may up hip fx rate by ~60% b/c can interfere with phosphate absorption (phosphate in milk, cheese, meat, coke, etc) 2) exercise stimulates bone density + bone mass increase. 1200mg for ppl after growing yrs much in esp yogurt, sardines. Ca buildup and heart attacks in postmenopausal women. Ca uptake better when vit d is present adolf windaus 1928: sunshine: needs 500 iu/day uvb, montreal winter (nov-march) = Data = look at your risk % in terms of 100 %