I have been on BHT for 12 years and was diagnosed with osteoporosis, just 18 months ago. I was shocked as I thought oestrogen would help with bone loss! In my case, I imagine the culprit was the stomach band I had in place for weight loss (I was obese). Having this band prevented me from getting the nutrients I required especially protein. I was offered Bisphosphonate meds but refused as my 10 year fracture risk was only 11%.