In the emerging field of biodegradable metals, innovative materials are designed to safely degrade and be absorbed by the body after completing their intended medical functions. This approach addresses the limitations of traditional metallic implants, which remain permanently in the body and may cause long term complications. This chapter explores the need for biodegradable metals that degrade gradually in vivo, eliciting favourable biological responses from the host and leaving no residual material, thereby advancing the potential for more effective and biocompatible medical solutions.