The moral authority of advance directives as a vehicle of precedent autonomy is highly problematic in cases of severe dementia of the Alzheimer’s type. It is unclear how personal values and interests can be enforced by means of such an advance directive; at the stage of severe dementia the distal binding powers of precedent autonomy have expired; and the moral costs of removing another human being from life are very high. It transpires that in fine drawing up an advance directive (...) in the face of Alzheimer is an inappropriate method of orchestrating one’s future care and death. This leaves persons diagnosed with Alzheimer’s disease with two morally preferable alternatives. One is that they accept that, when severe dementia is setting in, autonomy is not an issue; others decide. The second is that they commit pre-emptive suicide after Alzheimer’s disease is diagnosed. (shrink)