The elimination diet is key to determining any allergy or intolerance to foods. Like Gluten Free Momsense blogger, I, too, noticed a difference almost right away when I first eliminated Gluten from my diet… but even more telling was when Gluten was added back in. She notes,

Some people don’t feel a difference during the elimination phase but do feel terrible when they reintroduce the food. It’s a simple test to do, does not require blood to be drawn or biopsies to be performed but can make a big difference in how you feel!

For her full post on the subject, check out her site.