Seems to have worked for gluten, at least. i.e. Consumers look for "gluten free" labelling rather than "This product contains gluten" labelling.
If I were the FDA I'd standardize the nutrition label to have a clearly labelled allergen section in which you can reliably use to check that the product is free of X allergen. Of course a naive implementation of this would mean that water bottles and stuff will have a big long list of "gluten free, peanut free, dairy free" so it probably requires a bit more thought.
If I were the FDA I'd standardize the nutrition label to have a clearly labelled allergen section in which you can reliably use to check that the product is free of X allergen. Of course a naive implementation of this would mean that water bottles and stuff will have a big long list of "gluten free, peanut free, dairy free" so it probably requires a bit more thought.