I had never heard of it either. We all know about lactose intolerance but fructose was news to me. My poor daughter, I feel so bad for her, but it is manageable. Just a big p.i.t.a.
If you have no problems digesting fructose (which isn't always so obvious, I could tell you all about it but it would be a long long post), then I don't see why moderate amounts of natural sugar wouldn't be just fine in a normal healthy diet.
I think clean, organic, minimally processed food is the way to go. I don't have to worry about reading labels when I'm just eating fruits, veggies, and meat! It's the ice cream that gets me into trouble, lol.