Rich Lowry: The cupcake cops

First they come for the alcohol, then for the tobacco, then for your sugar.

When the day arrives when you have to undergo a background check and endure a three-day waiting period to enter a Dunkin' Donuts, you can trace it back to this moment. Namely the publication in the journal Nature of an article calling for regulating sugar as a health hazard, although stopping "far short of all-out prohibition" (that would be too extreme).

One of the authors is Robert Lustig of the University of California, San Francisco, who hopes to be to the consumption of sugary beverages and foods what William Wilb...