Here's my friend Betty's story. She discovered that gluten was behind her persistent cough. (Betty's the president of Guardian Nurses -- truly you want GN in your corner if you are dealing with complicated or long-term health issues for yourself or a loved one.) Other people I know personally are benefiting from a GF diet without the benefit of a celiac or allergy diagnosis. A friend and co-worker who has persistent debilitating GI distress who tested negative for celiac feels fine when she adheres to a GF diet. The asthma of child of another co-worker and friend is much improved from following a GF diet. A dear relative of mine whose doctor was ill-equipped to pursue a definitive diagnosis cleared up many significant GI issues AND supported his fitness regimin by going gluten-free. One friend had Dermatitis Herpetiformis (a classic sign of celiac) but tested negative when biopsied, who has resolved her issues on the GF diet. How many people do you know that suffer from canker sores or rheumatoid arthritis or lupus or teeth enamel problems or fertility issues or a host of other problems who have no idea what the cause is and can't seem to get better?
I don't believe that all of our ills are caused by gluten. I do believe that as a society we regularly eat things that are either not healthy or which have been so genetically engineered over time as to make them unrecognizable as food to our systems, confusing our natural defense mechanisms and setting off a chain reaction within our bodies from which we get sick.
I strongly believe that each of us needs to take responsibility for our own health and well-being. I try to avoid preaching. I do believe that if a person gets a diagnosis that confirms that damage is being done to the body by eating gluten that they are more likely to adhere to a strict GF diet and improve not only their quality of life NOW but decreasing the likelihood of related more serious health issues later. But for those who haven't tested positive, don't buy it if your doctor says that gluten isn't the issue. Trust your intuition. Listen to your body. Keep looking for the answer. It's your life and you should feel as good as you possibly can to make the most of it.