Can humans be eaten by other humans?

Answer 1

Yes, it is called cannibalism and this is the act or practice of humans eating the flesh or organs of another human. Some tribal peoples cannibalized for magical or religious purposes. There are also cannibalism in some events where people found themselves without food. In 1609 the 34 men starving in Jamestown turned to cannibalism to stay alive. Park service historians have found evidence of teeth marks on the bones of Jamestown dead. Another time a group of people called the Donner party were going west and got stuck in mountain snows. To stay alive they did turn to cannibalism.

Answer 2

Not normally. Cannibalism is accepted to be outside normal human behaviour: There have been exceptions to this in times of war or disaster. And in extremis to stay alive....