You can develop gluten intolerance suddenly, depending on genetic factors. Some people have symptoms of this condition earlier in life, while others don't have signs of gluten intolerance until they're older. If you suddenly have symptoms, you should see your doctor for testing and treatment.
What causes a person to become gluten intolerant?
Others believe most patients are actually reacting to an excess of poorly absorbed carbohydrates present in wheat and many other foods. Those carbohydrates—called FODMAPs, for fermentable oligosaccharides, disaccharides, monosaccharides, and polyols—can cause bloating when they ferment in the gut.