I, too, have been struggling mightily to get enough calcium via food, while trying to figure out how to make sure that it is absorbed. I wish we could find a dietician who was an expert in this field. I have idiopathic hypercalciuria (high urine calcium with no known cause), but I am not a stone former. So the advice from kidney specialists to pair oxalate foods with dairy doesn't really fit. And then there's phytic acid and other anti nutrients to consider. Makes figuring out what to eat kind of stressful.