If someone has low stomach acid and poor digestion could that cause an allergy to gluten? could it cause gluten antibodies to be elevated?

Possibly: If you are not producing acid in the stomach, this can lead to poor digestion of proteins and increased bacteria in the intestines. Poor digestion and bacterial overgrowth can lead to compromise of the intestinal lining. This intern could lead to more gluten passing through the intestinal barrier and stimulating the immune system to produce anti-gluten antibodies. Get in if you have problems.