Many people do not want to be kept alive artificially. They want to die naturally with no life support, but without pain and they want the administration of pain medications. Well, unfortunately many sign form Living Wills that automatically withdraw hydration and nourishment in the directive to the healthcare surrogate. The significance of that is if you are dehydrated it significantly reduces the effectiveness of pain medication. I always counsel against the withdrawal of hydration. Seek the advice of an attorney to help you with your estate planning and healthcare documents.