To investigate the mechanism of doxorubicin (DOX)-induced bone loss, µCT scans of femurs from mice injected 3-MA or vehicle after treatment with DOX were analyzed. Recent work has suggested an involvement of autophagy in DOX resistance [[20]] and DOX-induced cardiotoxicity [[21]], suggesting that the effect of DOX on bone density may be mediated by autophagy. DOX-treated breast cancer patients exhibit low bone mineral density [[13]] and DOX-treated children also undergo long-term bone damage [[15]], suggesting that there is a strong association between DOX treatment and bone loss.