@cperlin Thank you! I was on a SSRI for a while, but I'm no longer taking it. I'm not taking any of the other drugs you mentioned. I just had extensive blood work done and my PTH is low, but vit D, calcium, mag, and thyroid were all normal. So, not sure what's driving the train! I am post menopausal and not been on HRT, but don't think that is the main reason for such rapid bone loss. I really think it might be tied to my gut which is a mess, but none of the Dr.'s can figure out what is going on.