HSS 2342 Lecture Notes - Lecture 13: Bone, Bone Mineral, Bone Density

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 2342
• Professor: Keir J Menzies

Document Summary

The result is strong, dense bones: with a dieta(cid:396)(cid:455) defi(cid:272)ie(cid:374)(cid:272)(cid:455), (cid:271)lood (cid:272)al(cid:272)iu(cid:373) still (cid:396)e(cid:373)ai(cid:374)s (cid:374)o(cid:396)(cid:373)al (cid:271)e(cid:272)ause (cid:271)o(cid:374)es gi(cid:448)e up to (cid:272)al(cid:272)iu(cid:373) to the blood. Increased calcium intake ensures adequacy: absorption differs during different stages in life, adults: 30% (peak bone mass by their late 20s, pregnancy: 50, children: 50 60% (when growing we absorb more, factors, enhancers: stomach acid, vitamin d. Inhibitors: lack of enhancers, high phosphorus, phytates, oxalates, fibre: however: calcium is unlike most nutrients in that hormones maintain its blood concentration, not so much reliant on dietary intake if all systems are functioning properly. Calcium deficiency: any deficiency that occurs during active growth may limit ability to reach their peak, best protection against bone loss as we age is to ensure that we reach our peak mass in our. Bone loss begins in 30s: osteoporosis: when bone losses reach a point of causing fractures under common, everyday stresses (it does not include a fall).