Has anyone ever gone to an OA Meeting?

I went to support my sister one time several years ago. Supportive. They talked about what things were triggers for them to overeat. Spent time trying to get to the bottom of the 'addiction' of it. They confessed weird stuff they would eat that is what I remember the most. But it was done in an atmosphere of support. They would offer each other ideas on how to maintain a better regimen and so on.