Question: how do you know if gluten free bread is bad?
Answer: Diarrhea and constipation. Share on Pinterest Symptoms of gluten intolerance may include constipation, fatigue, headaches, and nausea. ... 
Bloating. ... 
Abdominal pain. ... 
Fatigue. ... 
Nausea. ... 
Headaches. ... 
Other symptoms.