The Torah is compared to bread, as the verse (Mishlei 9:5) states: “Come, partake of my bread.”
When an individual studies Torah with the intent of clinging to G-d, then the Torah is properly “baked” with the fire of love. The Torah is appropriately “digested” and becomes one with the individual.
However, if the Torah is not “baked,” it remains separate from the individual. This is similar to bread that is not properly baked and therefore is not correctly digested.
(Likutei Torah, Bechukosai 48c)