Living wills are documents that contain the wishes and desires of people regarding their medical treatment in the event of their being unable to correspond with their doctors and relatives due to incapacitation. Also known as advance health care directives, living wills are legal instruments that have been signed by witnesses and notarized. A living will is enforced when the medical experts are absolutely certain that there are no possibilities for the renewal or revitalization of a person's health and that death is sure to occur sooner or later.