<<Disclaimer: Verify this information before applying it to your situation.>>

In reply to Vance's @ Sandybill's recent informative posting on calcium...

A recent article in the Tufts University medical newsletter stated that if
you drink soy milk as a substitute for cow's milk (as I and many of us do)
and are relying on it for a one-to-one substitute for dairy calcium (and
we do), then you are getting short-changed by a factor of about half.  It
turns out that tricalcium phosphate, the calcium supplement in soy milks,
is only absorbed with half the efficiency as dairy calcium.  So if you've
been substituting 1000 mg of soy milk calcium for 1000 mg of milk calcium,
better get more.  You only absorb 300 mg out of every 500 you'd get from
the comparable amount of real milk.  So the calcium content they say is in
there is in there, but you have to discount its usability by 40%.

Don't know the usability of the calcium hydroxide they use in OJ?  Does
anybody have any info on that?

Jere in SoCal