fruit consists of natural sugar. if you eat fruit correctly, in addition to the rest of the balance of the pyramid like you're supposed to, you don't have to worry so much. sure, you have to watch it if you're on a controlled diet (trying to lose weight,) or if you're a diabetic or all the other exceptions.
but it's not just diet and it's not just calories and it's not just carbs and sugar. it's eating right in addition to working your body the way it's meant to be worked. if we all worked like we were made to, our systems/organs would be stronger.
kids these days eat all these chemicals and fake food and don't exercise and have computers at school and PE's not even every day. i'm stating facts, not my opinion. it's not the way nature intended us to use our bodies. well, up to this point, anyway. it'll be interesting to see how we evolve from such a like society.
The food pyramid is the worst thing to happen to Americans since the British. Ever since we created the four food groups (and now the food pyramid) American waistlines have been growing and growing causing massive health problems.
I read a VERY interesting article about it in Mother Earth News and since then have done a little research. A calorie isn't a calorie isn't a calorie. More specificly, our high carb diets are slowly killing us. We were designed to use carbs to pack on fat, they were a "treat". Now we eat them with every meal and continue to get fatter and fatter.