Phagelod, I also have Crohn's disease - since mid-1975, Dx'd early 1976. I am seeing a new Endocrinologist later this week. The current Endo has Dx'd me with osteomalacia (in addition to osteoporosis) and secondary hyperparathyroidism and has scripted 100,000 IU of vitamin D weekly for the last 15 months. The current Endo also insists that I not start Forteo or IV pamidronate until my PTH is below 30 and my vitamin D 25 hydroxy higher (but I haven't been able to pin her down on how high she wants it). I've lost ground again this past year with a worsening of my T-scores.