The full answer
Yes — it can go either direction
While diarrhea is more commonly associated with celiac disease, constipation is also a recognized symptom, particularly in children. The intestinal inflammation and nutrient malabsorption caused by celiac disease can disrupt normal bowel function in either direction, and some people experience both at different times.
When it's worth investigating
Constipation alone rarely points straight to celiac disease, but combined with other symptoms like bloating, fatigue, or unexplained weight changes, it’s a reasonable reason to ask about testing rather than only treating the constipation itself.
Important context
Individual symptoms, reactions, medical histories, food products, and local labeling rules can vary. Community experiences are not medical evidence.
For personal medical decisions, diagnosis, testing, or treatment, consult a qualified healthcare professional.