The first paragraphs say:
 
"A lot of people love to travel. Can you blame them? Who doesn’t want to experience the thrills, the adventure and the fun it brings to go to a new place. Who doesn’t want to experience new cultures and try out new foods? 
 
We all love good food, but there are things none of us like: Constipation, bloating, gas and aches that come with completely opening ourselves up to food in different countries. Believe me, there's no bigger discomfort than having a belly ache as you are on a journey. If you are going to enjoy your trip, either for vacation or business, then you've got to take measures to keep your stomach as happy and comfortable as possible."