The Science of Bone Health: What We Know
Bone is not a static organ—it constantly regenerates and renews itself. In fact, the entire skeleton is replaced approximately every 10-15 years through a process called bone remodelling. This delicate balance involves three key types of cells:
Osteoclasts
- which break down old or damaged bone tissue.
Osteoblasts
- which build new bone by forming a strong collagen matrix and mineralizing it.
Osteocytes
- which are mature bone cells embedded within the bone matrix. They act as "sensors," detecting mechanical stress and damage in the bone. Osteocytes communicate with osteoclasts and osteoblasts to help coordinate the remodelling process, ensuring bone strength and adaptation to physical demands.
During childhood and adolescence, this process supports growth and development. Old or damaged bone is replaced with new bone.
However, as we age, especially after menopause in women or with aging in men, the balance can shift. Bone loss may outpace new bone formation, leading to conditions like osteoporosis, where bone becomes weaker and more susceptible to fractures.
This is why understanding and supporting bone health is critical to preventing fractures and maintaining independence later in life.
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