Autocannibalism

[1][2] Generally, only the consumption of flesh (including organ meat such as heart or liver) by an individual of the same species is considered cannibalism.

While some texts use this strict definition,[4] others use the term autocannibalism in a wider sense that includes the consumption of hair or nails from one's own body.

[6] In very rare cases, people have eaten a part of their own body (such as a foot) that had to be amputated for medical reasons; such acts may be motivated by curiosity or a desire to attract attention.

[17] Human placentophagy after childbirth is touted by some as a treatment for postpartum depression and fatigue, among other health benefits,[18] given its high protein, rich iron and nutrient content.

[21] Therefore, even if one considers placentophagy a form of cannibalism, a mother eating her baby's placenta after giving birth would not practice self-cannibalism.

The sea squirt (with a tadpole-like shape) contains a ganglion "brain" in its head, which it digests after attaching itself to a rock and becoming stationary, forming an anemone-like organism.

In an Arthurian tale, King Agrestes of Camelot goes mad after massacring the Christian disciples of Josephus within his city, and eats his own hands.

[24][25] The book brought together a wealth of accounts of corpses thought to have "consumed their own shrouds and winding cloths, and even their own limbs and bowels".