Answer:
Due to gluten intolerance.
Step-by-step explanation:
Gluten is a protein present in the food items like wheat, barley and bread. Nearly 1% of the population are unable to digest the gluten protein.
The gluten intolerance people feel bloated as gas build up in their body after the consumption of wheat. This may leads to uncomfortable and health problems in gluten intolerant people. This is a type of auto-immune disease.
Thus, the correct answer is gluten intolerance.