• Question: What are the bones made from and why they are hard and strong?

    Asked by 455xygg52 to Gavin, Karen, Mark, Michel, Roisin on 15 Nov 2016.
    • Photo: Karen

      Karen answered on 15 Nov 2016:

      Bones are made from cells called osteoclasts and osteoblasts and the are hard and strong due to calcium which causes the cells to fuse together in a rigid structure.

    • Photo: Michel Destrade

      Michel Destrade answered on 16 Nov 2016:

      There’s an interesting scientific debate about milk consumption and calcium levels. It seems that the countries with the highest milk consumption have the also the highest rate of osteoporosis, a disease that weakens your bones, and the other way round too (such as in China, where they eat and drink very little dairy and have little incidence of osteoporosis). Still not a definitive scientific answer here, but a fascinating debate!