bone loss
3 interactions related to bone loss
methylprednisolone + vitamin d
Methylprednisolone (a glucocorticoid) speeds the breakdown of vitamin D and weakens vitamin D-driven intestinal calcium absorption. Over continued therapy this lowers vitamin D status and contributes to glucocorticoid-induced bone loss.
prednisone + calcium
Glucocorticoids like prednisone impair intestinal calcium absorption and increase urinary calcium loss, contributing to a negative calcium balance and accelerated bone loss. This is a depletion-and-displacement effect, not a chemical interaction in the gut, and it is why calcium and vitamin D are treated as the foundation of bone protection during long-term steroid therapy.
smoking + hrt
Smoking speeds up how the liver breaks down estradiol, lowering circulating estrogen and reducing the effectiveness of oral hormone replacement therapy. It also adds to the blood-clot risk that oral HRT already carries.