Bhutan-I know that group therapy topics can pertain to weight loss if this is a support group for people with food addictions.
Often people that had a troubling week might discuss their obstacles and how they might perform better in the future.
Here the group can offer support by another member of the group providing advice for that member and letting them know that also suffered setbacks and that setbacks are a natural part of any life long journey.
Group therapy models always involve the members revealing something about themselves because it is through these revelations that the majority of the group learns to heal.
This is why groups like Weight Watchers are the most effective weight loss program in the world because members discuss challenges and positive developments in a supportive way that encourages most members to continue to attend the meetings and lose weight.