Because it is the source of the fall of humanity, it is sometimes also called the "Tree of Death" (Seder Eliyahu Rabbah 5). The exact type of fruit that Adam and Eve ate was a matter of rabbinic debate. Candidates put forward include: grapes, pomegranates, etrogs, and figs. One Sage even argued for wheat, but his colleagues ridiculed him for that claim. Fig has been the most obvious choice, because only a few verses later it is described how they made garments of fig leaves (Gen. 3:7). There is also a Talmudic tradition that the leaves of the Tree contain the knowledge of magic and consuming them grants one such gnosis (Ber. 40a; B.M. 114b).
The Tree of Life is linked to Atara (Keter) in the Sefirotic system (Biur al ha-Torah 1:67).