So the question still stands; why is Attention Deficit Disorder most common in the United States than anywhere else in the world? The biggest reason is that our nation's eating habits are completely different from other countries. Our nation's diet contains massive amounts of sugar and caffine. The nation's children consume all of this sugar and caffine in massive amounts and are then expected to sit down and do their homework or pay attention in class. Sure, there is sugar and caffine in other countries, but they are not consumed in such large amounts as they are in the United States.
Take a look at the popular foods that kids eat and see how much sugar and/or caffine there is. One can of Dr. Pepper has forty grams of sugar plus caffine. One pastry Poptart has nineteen grams of sugar and always come in packs of two. Even two tablespoons of Jif peanut butter has three grams of sugar. This may not sound like much, but think about how much of these products American children actually consume. It is a very common site to see children drinking soda like it's water. Almost every child eats both of the Poptarts in the package in one sitting. And most people don't take the time to measure out two tablespoons of peanut butter; they usually just smother their bread with it.
How this relates to ADD is very simple; children get all of this sugar in their system and are then expected to sit and concentrate. With all of the sugar in their system, their body doesn't want to sit still. Children have a short attention span already and all of that sugar and caffine does not help the situation. Adults do not seem to understand why children are so hyperactive. Well, they have to understand that children are very active in the first place, and all the sugar and caffine that they consume takes their hyperactivity to the next level.