Before the dementia takes away the person’s ability to make decisions, his or her support (family, friends, social workers, etc.) should encourage him or her to consider whether to prepare and execute a Living Will. . . . A Living Will is a set of instructions that a person uses to tell his or her loved ones and medical professionals what the person wishes to happen if he or she falls into a persistent vegetative state. Read more at this link: http://www.protectingseniorsnews.com/legal-issues-when-someone-has-dementia-considering-the-living-will/