A health care directive (also known as a "living will") is a written document that informs others of your wishes about your health care. It allows you to name a person (“agent”) to decide for you if you are unable to decide. It also allows you to name an agent if you want someone else to decide for you. You must be at least 18 years old to make a health care directive.
A health care directive is important if your doctor determines you can’t communicate your health care choices (because of physical or mental incapacity). It is also important if you wish to have someone else make your health care decisions. In some circumstances, your directive may state that you want someone other than a doctor to decide when you cannot make your own decisions.