A durable power of attorney for healthcare is a legal document that allows an individual, known as the principal, to appoint someone else, called the agent, to make medical decisions on their behalf if they become unable to do so. This arrangement ensures that the principal's healthcare preferences are respected, even if they are incapacitated due to illness or injury. This document remains effective even if the principal becomes mentally or physically unable to make decisions, hence the term "durable." It is important for individuals to discuss their wishes with their chosen agent and to ensure that the document complies with the laws of their state to be valid and enforceable.