Overeating has a spiritual cost.

We tend to think that eating and drinking are parve in a spiritual sense, but the reality is that they will either uplift or degrade us. Overeating can desensitize us from becoming what we are and want we want to be. Rabbi Nachman says that overeating leads to the illusion that the physical side is all that there is in the world.When you buy into this lie, your life becomes a distortion of the truth.

from an article by Rebbetzin Heller in the Hamodia,
 thank you Rivkie for bringing this to my attention.