Physicians, health care workers, members of the clergy, and laypeople throughout the world have accepted fully that a person is dead when his or her brain is dead. In the United States, the principle that death can be diagnosed by neurologic criteria (designated as brain death) is the basis of the Uniform Determination of Death Act,¹ although the law does not define any of the specifics of the clinical diagnosis. There is a clear difference between severe brain damage and brain death. The physician must understand this difference, because brain death means that life support is useless, and brain death . . .