Why is radium banned?

Could you elaborate on the rationale behind the ban on radium? As a metal renowned for its luminous properties, it seems to have potential applications in various fields. However, I've heard of concerns about its toxicity and radioactive properties. Is this the primary reason behind the prohibition? Do the risks outweigh any potential benefits? What steps are being taken to ensure that the dangers posed by radium are mitigated, and how can we ensure that its use is safely regulated in the future, if necessary?