V.P.
I was also just going to recommend Wheat Belly -- I'm reading it and really enjoying it. I started going gluten free out of support for my daughter who we just found out has a wheat sensitivity. So that she wouldn't be alone, I started eating gluten free. My appetite plummeted, I have a ton more energy. Then after about three weeks, I had a slice of pizza and I was sick as a dog for a week and a half! My sister has celiac, but I never thought I had a problem with gluten until I stopped eating it. Then I started reading Wheat Belly and taking it all more seriously. I now eat very little starch, almost all vegetables and lean meat. I have more energy and focus than I've had in years, and I've lost 5 pounds in the last 10 days (since I cut out or reduced additional starches, per Wheat Belly). It's a lot easier to follow than I thought, especially since I'm almost never hungry and you get to eat full fat things, so I don't limit things I love, like olives, cheese, nuts, etc. Your body just naturally adjusts to needing less food once you control the spikes in blood sugar caused by wheat.
I feel better than I've felt in years. In addition to the weight loss and energy, the arthritis in my knees is gone. I no longer snack or crave junk, and I enjoy eating more than I ever have. Right now, I'm making the filling for stuffed peppers -- the filling is eggplant, walnuts, portabello mushrooms, banana peppers, onions, spinach, two little jalapeños that I grew myself (yay!), roasted garlic, and parm cheese. That'll go into red pepper shells. At the same time, I'm roasting sugar snap peas in olive oil and sea salt for a snack later. It all smells so good! But even with that, I'm not at all hungry right now, even though all I had for breakfast was a hard boiled egg and two olives. And I'm trying all sorts of new things -- I had raw pad thai made with kelp noodles the other day, and it was amazingly good! So I bought kelp noodles to replace pasta (I already like spaghetti squash, but this is so much easier!).
I've done a lot of diets in my life, but this is something I could easily live with.
And by the way, my daughter started going wheat, milk, and egg free because of allergies that we discovered through testing/treatment for add. I have to say, her focus and energy and self-confidence has grown 10 fold since we changed her diet and supplements.
Be really open minded to exploring it -- I think you'll be surprised!
ETA: I'm not sure how long ago Liv was diagnosed -- my sister was diagnosed about 10 years ago and back then it was only possible by biopsy. But they ruled out celiac in my daughter with a blood test -- I don't know how recently that's been developed. But she's right that if you want to know for sure (you seem to know already, based on what you wrote) you need to be tested before dieting.