I don't know but if you're not eating all day then your body might trigger a natural reaction to binge eat at night. It's actually not an uncommon thing. For the most part, Western Culture has us all eating backwards. We rush in the morning and either have only coffee, energy drinks, or tiny little meals (like a cereal bar.) Then small and quick lunches, then huge dinners. It's upside down.

Even if you're not working, you could be stuck in this pattern.

I work in a dietitian office and this is possibly one of the most common causes of weight gain regardless of the persons Dx or med history.