Calcium Controversy- Part 2

In my previous post I had discussed the evidence of vascular calcification and cardiovascular deaths in males taking calcium supplements unless specifically indicated. However, the importance of these supplements in post menopausal women has always been proved beyond doubt.

Now we have emerging evidence to the contrary.

A meta analysis revealed that calcium alone did not significantly reduce the risk of fractures while calcium with vitamin D did reduce the fracture risk by 12%. Vitamin D alone also does reduce incidence of fractures.

The National Institutes of Health-AARP Diet and Health Study has given new insights.

Among women, the current study suggests a neutral effect of both dietary calcium and calcium supplements on the risk for CVD. Physicians should keep in mind, however, that vitamin D and not calcium is principally responsible for preserving bone and preventing osteoporosis among women.

Take home message:

Vitamin D at a dose of at least 800 IU/day should be the primary treatment for women at average risk for osteoporosis. Until the questions regarding the long-term safety of calcium supplements in both sexes are better understood, it is reasonable to withhold calcium among women receiving preventive treatment for bone health.