It is unfortunate to see articles claiming to "know" about nondairy sources of calcium and yet they mention veggies that also contain significant amounts of oxalates that BIND up the calcium into calcium oxalate (think kidney stones that don't dissolve) and BAM, no calcium for the bones. A research article on chinese teas also found that the oxalates in the tea leaves would bind the calcium in any milk added to the tea. Don;t EVER count on any Ca being available to your bones or heart or anything else in your body when it is in the same stomach contents as anything containing an oxalate. Does that mean all of it is bound? No but it does mean you do not get all of the 100+ mgs mentioned in the list for the Ca in the veggies. So if you have sweet potatoes and collard greens in the same meal, not only will the oxalates in the collards bind with the Ca, so will the oxalates in the sweet potatoes. And, if you have tea at the same meal, it just keeps adding up oxalic acid wise. Writers of these types of articles need to know a little more about biochemistry and human nutrition before they pass out erroneous info says this RD, MS contributor.
- 6/7/2013 7:29:12 AM