I think you have hit the nail on the head, Many of the products in our diet contain wheat, cereals for breakfast, sandwich for lunch, pasta evening and even beer you wash it down with. Wheat is great versatile product but we can eat to much of it.
By the way i suffer from IBS, so I am careful of how much bread I eat. I'm not sure if bread is the aggravating factor although i know it doesn't help, also coffee aggravates it.