what is calcium for
Calcium is perhaps the most essential nutrient when it comes to bone health. Building strong bones is like building a healthy balance in your âcalcium bank account.â Bones are living tissue and constantly in a state of turnover, making calcium deposits and withdrawals daily.Bones don't come with a lifetime guarantee.alcium is perhaps the most essential nutrient when it comes to bone health. Building strong bones is like building a healthy balance in your âcalcium bank account.â Bones are living tissue and constantly in a state of turnover, making calcium deposits and withdrawals daily.