Mexican Bathroom

Why Mexican food to people going to the bathroom?
The combination of things: the way they prepare food, ie fat, oils, etc (fried tacos, lots of cheese, which should be the opposite effect, fried stuffed Chile). There are probably a lot of grains, fruits music. And spices, your body can not be used for them and could accelerate certain processes. If this fast food style Mexican food is the increase of fat and grain factor by 10.