To have some say about how you die (e.g., the extent of life support, use of a ventilator & feeding tubes, decisions on hospice care) and where you die (e.g., hospital or home), it is very important for all adults to have a valid advance directive (a living will). If you are in a serious situation with your health, you might also want to talk to your doctor about filling out a more-specific POLST form (Physician Orders For Life-Sustaining Treatment).
To get a form by mail send $5 to Partnership for Caring Box 97290 Washington, DC 20077-7205 or call their toll-free hotline to place a credit card order: (800) 989-9455.
Language one can add to an advance directive that advises physicians and family of the wishes of a patient with Alzheimer's disease or other dementia (from Compassion and Choices, Denver CO).
Are POLST Forms The New Living Wills? by Clark Howard, June 19, 2014.
Advance directive forms available for free online by Clark Howard, January 13, 2012.