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Medication is available to increase bone mineral density and reduce the risk of further fracture . Also , high dose fluoride has significant Gl side effects and increases non-vertebral fracture rates . " After a first fracture , the risk of a subsequent fracture in women is doubled , but for men , it is increased three - to four-fold , so that the absolute risk of a subsequent fracture is the same for women and men , " said the study 's lead author , Jacqueline Center , a senior research officer at the Garvan Institute of Medical Research in Sydney , Australia . " The most important thing people need to know is that after virtually any first low-trauma fracture , the risk of subsequent fracture is increased substantially . A dike is a magma-filled fracture - - now hardened and exposed - - that was injected upward into the ancient volcano .