There is so much to say about the implications of attachment theory for eating issues and a sustainable, positive weight management.  As you will find reading through these articles, the center of the issue is that the securely attached child develops builds a positive model of relationships and thereby has a gateway into the realm of interpersonal coping methods.  The insecurely attached and disorganized attachment children are more likely not to have much trust of interpersonal resources and therefore remain more predisposed to using coping methods that rely on oneself - often using methods that lean heavily on distraction and suppression.  Because the most common emotional management method of emotional eating is to distract or suppress, it is not surprising that insecure attachment correlates highly with emotional eating issues. Furthermore, the securely attached child can relax when it comes to coping strategies.  Their experience has been that it may take some time for the attachment figure to attend to them, or to figure out what they need, but that waiting and then working on whatever the issue it is will result in things going well.  The insecurely attached are more prone to needing more proximate, quick acting coping methods - again, lending well to emotional eating and other coping methods that deliver more immediate results.

Please take a look at the first piece below.  It is excerpts from a recent  Human Development textbook.  It provides a solid introduction to attachment theory. Follow that with Jude Cassidy's article on Intimacy and Attachment and then any of the articles linking attachment to eating disorders.  I think you will find it all very illuminating.

The sub-pages below are organized a little loosely, but with the intent of helping you approach a specific interest within attachment.