My teen (14) son was diagnosed with growth failure due to celiac. He has gained 20 pounds 3 months on a gluten free diet but hasn't grown height wise yet. For anyone diagnosed as an early teen can you tell us if it's normal to get a little chubby initially on a gluten free diet. He is unhappy to be short and now unhappy to feel like he is getting fat. Thank you very much for your help. He'd like to know if anyone else experienced weight gain initially without a height increase.