Posted by JLx on April 30, 2003, at 13:20:34
In reply to Re: Magnesium and Calcium Questions, posted by noa on April 29, 2003, at 19:14:56
> I learned from some more reading that it is now no longer believed that calcium, via food or supplements, is bad for people with stones, but it is recommended that the supplements be taken with meals containing foods that have oxylate in them (esp. vegetables), because of some relationship between calcium and oxylate in forming stones.
I'm curious where you have read that. This article, Calcium by Elson M. Haas M.D. http://www.healthy.net/scr/Article.asp?Id=2019, has a table of "Factors Affecting Calcium Absorption"
INCREASED BY:
Body needs—growth, pregnancy, lactation
Vitamin D
Milk lactose
Acid environment—hydrochloric acid, citric acid, ascorbic acid (vitamin C)
Protein intake and amino acids such as lysine and glycine
Fat intake
Exercise
Phosphorus balanceDECREASED BY:
Vitamin D deficiency
Gastrointestinal problems
Hypochlorhydria (low stomach acid)
Stress
Lack of exercise
High fat intake
High protein intake
Oxalic acid foods (beet greens, chard, spinach, rhubarb, cocoa)
Phytic acid foods (whole grains)
High phosphorus intake> There clearly appear to be a bunch of different factors that could come into play, and therefore, there doesn't seem to be a clear message from the health experts on what works and what doesn't.
I agree, it's confusing. I'm reading a good book book now, "The Estrogen Alternative" by Raquel Martin and Judi Gerstung which quotes a doctor, Norman W. Walker, who says there is a distinction between oxalic acid in raw and cooked foods. Oxalic acid in raw foods readily combines with calcium, he says. She notes this is contradictory from the usual advice, but adds that Dr. Walker lived to be a hundred and nine by following his own advice, and his wife died in her nineties. :)
poster:JLx
thread:222998
URL: http://www.dr-bob.org/babble/20030429/msgs/223439.html