On one hand, if someone was really underweight due to malabsorption pre-dx, then weight gain after gluten-free diet would make sense. But it seems you'd be less starving and tend to eat less once you're free of gluten and begin absorbing nutrients...? Does it feel like you're starving for some time after going gluten-free, hence overeating? (I've been tested and am awaiting results.)
TIA.