3- Loss of Energy or Attention
If you feel like your brain is foggy or fatigued after eating a meal with gluten, this may be a sign of gluten intolerance.
It happens because your body is working hard to remove a harmful substance and it takes away from your normal energy.
4- Diagnosis of an Autoimmune Disease
If you have been diagnosed with an autoimmune disease and are experiencing some of the other symptoms we’ve mentioned, the culprit for all could be a gluten intolerance.
Many people with gluten intolerance will develop the symptoms of an autoimmune disease, especially if they also have celiac disease. (Celiac Central)