Originally Posted by Severity

It's hard because it's not that simple. From reading a lot into this stuff I don't find saturated fats to be that bad, the problem is that people tend to overdo it and choose terrible sources. I for one think butter is a healthy addition to a diet as long as you keep the numbers in check. I do believe sodium is one of those things to watch out for. Almost everything has artificial flavoring, for example yogurt. I don't see yogurt as junk food. Sugar is also hard to explain because there are different types (dextrose/fructose/ lactose, etc) which change the way they're absorbed by the body.

For example eating too much fruit(fructose[sugar])can lead to non alcoholic fatty liver disease. Maybe if you explain why you want to label junk food it would make it easier to help. I think of it as over processed food. White rice for example, but it's different for everyone.