Sort of – our son was diagnosed with ADD years ago by a very good pediatrician. A few of his teacher's insisted that he had ADHD, but we were able to prove (at least to ourselves and to the doctor) that foods were adding the "H" to his behaviour (in particular food dyes – reds, blues, purples, and some sugars – ketchup turns out to be a bottle full of both sugar and food dye!).
With the hyper part gone, and once we found the right dosage of the right medication, the ADD was well under control and our son was 'allowed' to be himself again!