I was diagnosed with celiac disease at age 50 due to unexplained weight loss, I too was asymptomatic digestively. By the time I was diagnosed my small intestinal villi were cobblestoned. In fact, they were so compromised my gastroenterologist said she could see the damage visually (!) in the endoscopy and only did the biopsy "for completeness." I lost 20% of my bone density because those poor smashed villi couldn't absorb calcium, I know how much I lost because I had a baseline scan at age 37.

The good news is that my bone density recovered substantially once I went gluten free. However, then I went through menopause and lost bone density again. Since then I've reversed much of the second loss and have moved from osteoporosis to osteopenia.