No matter your age, health or financial situation, it’s probably a good idea to appoint a medical power of attorney (MPOA). With few exceptions, most people will go through at least one period of physical vulnerability in their lives. It may be declining at the end of your life because of old age, or it may be because of an unanticipated accident, temporary medical condition or because of a psychiatric condition. In any case, there may be a few hours, days, months or years when you are unable to make your own medical decisions. You can exert the most control by appointing an MPOA.