
I have celiac but I was diagnosed in elementary school so I’m not sure how helpful my early symptoms will be. I had failure to thrive (not growing) and nausea/vomiting after meals. As I got older I still had absorption issues leading to iron-deficient anemia. My main tip is to be aware of hidden gluten in foods. Gluten is not just in wheat, it’s also in things like malt and barley, and it doesn’t have to be listened in the allergen section of packaged food.
my sister was diagnosed celiac a few years ago! one way you can help her is help find alternatives that aren’t awful texturally? also, depending on where she lives, there might be restaurants nearby that are celiac safe. my sister has found a number of restaurants in her area that are for people with celiac, so none of their food is at risk of contamination or anything. that’s very area dependent, but it’s nice to have a safe food option if possible :)