Calcium is the most abundant mineral in the human body:
it represents 1 to 2 % of our bodyweight (1 to 1.
5 kg) found at 99 % in the bones and the teeth.
Besides its obvious function in the structure and the robustness of these tissues, Calcium is also involved in muscle contraction, neurons activity and blood coagulation.
As strong and solid as it is, the bone tissue is not a fixed but a dynamic structure:
old bone tissue is constantly replaced by new one.
This is achieved through active bone degradation, release of the Calcium in the blood circulation and reabsorption in newly-formed bone matrix.
Several factors can negatively influence circulating Calcium levels:
unbalanced diets, age, lactation, menopause, use of glucocorticoids as well as of laxative.
A small portion of Calcium is also naturally excreted in the urine.
To compensate for decreasing blood Calcium levels, bone is degraded to release Calcium.
This is why a constant supply of Calcium through the diet is primordial.