Hugh:
The author of this article recommends a Living Will. These documents often express a patient’s wishes not to be kept alive by artificial means. Your readers should be aware that food and water are now considered medical care in all 50 states, rather than normal care of the sick. That means that people who sign Living Wills may be unwittingly authorizing their own starvation and dehydration. It is far better to express your wishes about medical treatment to a loved one whom you trust and instead sign a Durable Power of Attorney for Healthcare. That gives your loved one the ability to insure the best care for you in light of the specific medical circumstances. – Critical Care M.D.