@heatlh matters that study cites many contradictory results among similar studies. The lowest impact found was, unfortunately, strontium citrate, the from sold in the US as far as I know. It looks like impact on femur is low. TMD refers to mineral density. I am still unclear what the presence of more strontium (or calcium, phosphorus) means and if it is a good thing.

The conventional wisdom is that strontium is heavier/denser than calcium and competes with it. (The study showing increased calcium would seem to contradict this.) Since strontium is heavier/denser, and replaces calcium in bone (again this is what I have seen so often in readings) the DEXA is affected and makes bones look denser than they really are. I guess we could conclude that CT would be better to evaluate the effects of strontium versus a DEXA?

@awful truth "tiny mice" LOL

The study refers to micro CT. so I am picturing tiny mice inside a miniature CT machine!

Too many contradictory studies so far, and the real concern for many of us is cardiovascular. Is that risk equal among the different forms of strontium. There is this idea that strontium is "natural" but there is nothing natural about 680 mg and in Europe the ranelate form is considered a medication. Here it is in health food stores so is considered "natural" but it is not, and it is also not regulated.