I thought I'd mention this as a side note to this conversation. I am no
physician, but I do a lot of my own research about this sort of thing.
Calcium is very important as you all know, but the recommended daily
allowance (I think it is from 1000-1500mg a day now) is for the standard
American high protein diet. The thing is that protein inhibits calcium
absorbtion. In countries that consume a  non- meat, non-dairy based diet
such as in Asia, the occurrence of osteoperosis is much lower than in the
United States. This is with a calcium intake of about 300 mg a day. Most
Americans eat way to much meat, and that is why the rda is so high in the
US. I'll see if I can find this article and reference it for you.

-Bronwyn