Constant urge to eat ALL the time?

It could be so many things. If you would go see your doctor and explain what you just said they will take a blood test and it will reveal any condition you may have. Possibilities include diabetes, thyroid disease, hypolycemia. Everything is easily corrected but you need to know what it is you have. It certainly is not normal to be eating like that all the time. Good luck to you and please see your doctor. You won't regret it.