Hello, Always Hungry Girl, and welcome to Psych Central! It sounds to me like your eating pattern was set in your childhood. And, alas, as we get older, we can't eat as many calories without putting on weight.

I don't know about an official eating disorder, but I would encourage you to talk to your doctor about establising a healthier eating program. And perhaps doing more activities.

Also, see about some health issue such as thyroid problems. Or maybe some meds you are taking. They can sometimes affect appetite.

Do you think you might be an emotional eater? For example, do you find yourself treating yourself with food when you are upset? It might be helpful to talk to a therapist about such things. A therapist can also be supportive of you as you work to break the unhealthy eating pattern.

I hope that was gentle enough---and that your eating can be improved soon.