If it's fructose that's the problem, then not only would they need to eliminate about 90% of the prepared foods out there (which would be a good thing), they'd also need to avoid the produce aisle, because all fruit has fructose in it, and veggies have a fairly high fructose to glucose ratio too.

For instance, this is the carb breakdown for 1 cup of raw broccoli:



1 cup raw spinach:


1 cup raw asparagus:


Somehow, I don't think that putting nursing mothers off the produce aisle is quite the effect they're going for.