It's not true that people on a GF diet are "healthier". GF is not recommended unless absolutely necessary.
Anyway, about a year ago, I started having abdominal pain and IBS symptoms. They became more severe and eventually I had nausea, vomiting, severe GERD and in the spring I developed cyclic panic attacks. They were absolutely unbearable. No one could figure it out. Celiac bloodwork came back negative and so did a biopsy. My GI told me to go gluten free. The first two weeks I felt worse. I was itchy, ornery, and had an increase in GI issues,however, after the first week, the panic started dissipating. By the middle of the third week, I was noticing marked improvement in my symptoms. I had had weird tingling and neuorpathic sensations - slowly fading. My trigger points were also less painful.
My GI doctor was stunned at the improvement. I was like a new person! She dx me with celiac and said to stay off the gluten. We're not exactly sure if I'm actually coeliac, but at the very least, I have a clear, severe intolerance.
It is a hard diet to follow, but trust me, it's a hell of a lot easier when you stop feeling like crap all the time. Now, I know immediately if I've been glutened. Instant nausea, severe pain, trigger point pain, etc and severe GI issues for days on end. I'm very sensitive. I can't have anything that may have been cross contaminated.
Have the tests done first and then do a GF trial. Gluten is a sticky protein. You have to be really dedicated to fully eliminate it. It's in beauty products (my deodorant had been causing a rash on and off for months - had barley in it - who knew?), cooking utensils (plastic), pots (coated), etc. Start by eating foods that are naturally GF. Don't go crazy with the labels touting "GF". Often, these foods are made on lines that are producing wheat products and cross contamination is a possibility. There is an allowance under the FDA for gluten free products to contain a small amount.
Any other questions, ask. I'm very strict with the diet because I have to be. You may start to notice you're having trouble with other foods too. We found out I am soy and lactose intolerant. I also cannot have high fructose corn syrup (don't ask how I figured THAT one out!).