I will say this again.... beware of articles that do not give DETAILS...

Here are some other studies in more detail:

http://www.medicalnewstoday.com/articles/11301.php

http://www.npr.org/templates/story/s...oryId=91891831

What this says is that REGULATION of calcium is the key. Calcium levels in the blood remain fairly constant when you are normal. If you don't consume enough, the body will take it from your bones. Calcium is critical for proper nerve functions in the heart and elsewhere.

The RDA for calcium is quite high for this reason.

More:
genetic dysregulation of the calcium in your tissues:
http://www.ivanhoe.com/channels/p_ch...?storyid=23953

I really think superficial "scare" articles do a great deal of damage in blocking our understanding of how things in the body really work. People latch onto the emotional content of articles of that type and don't dig deeper into the real facts. So, please, do be careful reading lay media articles, which may be poorly or incompletely written.