They have disconnected from their past, pain and externally someone or something has triggered their pain.
The individual will start to comfort eat to compensate, this is their way of soothing themselves.
On a deeper level Psychologically their weight is a shield of protection, to protect them from their pain that they are going to experience.
Each individual prepare's themselves for their experiences, knowing that something bad is going to happen.
When the individual is unable to accept their pain, they will experience it from others.
They comfort eat to block out their pain, due to blocked trauma.. (Psychosomatic Disorder)
People over eat to comfort their pain, they believe it stops when they are enjoying their food, and then they feel sick.
Behavioural Pattern-Starve-Overeat-Starve-Overeat-a vicious cycle.