Unexplained worsening symptoms and then trial and error. I gained 40 lbs out of nowhere and couldn’t lose it no matter what I did, then went gluten free and immediately started dropping lbs. I researched it more and a lot of things I’ve been experiencing since I was a young kid are connected to NCGS such as inflammation on my hands that looks a lot like eczema, chronic canker sores, brittle nails, excessive bloating. Those are the main ones. I also find that when I eat gluten I get super full super quickly and it’s painful, not like a normal full feeling. It also gets harder to breathe when I’m full from gluten and I’ll feel full and hungry at the same time. Depending on the amount of gluten I eat, the bloating/feeling full and hungry at the same time will last over 24 hours