Advance directives allow competent adults to authorize an “agent” to accept or refuse life-extending treatment if, due to illness or injury, they cannot do so themselves. Such directives also allow for choice of doctors and other details of medical treatment. A new and troubling question is whether an advance directive may legally require that nutrition and hydration be withdrawn in the event of severe Alzheimer’s disease or other forms of dementia. Should an individual’s current competent self be able to request that nutrition and hydration be cut off for their future demented self? Professor Benjamin will explore the question in detail, including the medical, legal, and moral issues it raises. Here are 21st century complexities worthy of our attention.