Here's a quick look at the percent of sugar that many "healthy" foods have. Notice that a bbq sauce is composed of more sugar than ice cream!
Here's a website that shows you how much sugar is in many US foods. http://www.fooducate.com/
They also have an app that you can use on the iPhone and Android. The Android app is available at http://play.google.com. I have been unable to find out if there is a cost for the app, but many foods one things are healthy, are really not. Check labels carefully.
Another quick way to judge the sugar content is look at the first 4 ingredients. Ingredients in the US are listed from most (by weight) to least. The first 4 ingredients will compose most of the product. If one or more of the first 4 ingredients is a form of sugar (glucose, fructose, sucrose, corn syrup, cane sugar, beet sugar, etc) then it's probably not good for you. Again, check labels carefully. Food companies in the US have fought heavily against any more truth in labeling when it concerns sugar or GMOs.
US public schools replacing soda machines with machines dispensing "juice" does not help the problem at all. The "juice" contains lots of added sugar, just as much as the soda.