Originally Posted by mrsD

Sweating with eating can be diabetes related. It is called gustatory sweating.

With undiagnosed diabetes, or even when you have pre-diabetic times (called impaired glucose tolerance), you can develop gastroparesis...which is a nerve degeneration affecting swallowing and the stomach.

This article is very complete with discussion of all the causes of gustatory sweating:
http://www.medscape.com/viewarticle/431617_3

Medscape has a strict copyright, so I cannot quote it.
If you are not a member there, you can join for free easily.
They have some very good medical articles there on everything!