One of my several criticisms of the soda tax is that it singles out certain liquids that contain sugar, and ignores other sugary substances. . . .And now comes news of a a study that suggests a better way to combat obesity and its attendant health problems: put a tax on “high sugar snacks” rather than simply on sugar-sweetened drinks. The study was conducted in the United Kingdom but surely the results would be the same if conducted in the United States. The researchers discovered that “high sugar snacks . . . make up more free sugar . . . intake than sugary drinks.” So I was on the right track with my suggestion that the “soda tax” should have been, and should be, a “sugar tax.” There’s a difference. As the researchers concluded, “Reducing purchases of high sugar snacks therefore has the potential to make a greater impact on population health than reducing the purchase of sugary drinks.”
Another, related, concern that I have about the soda tax is that it is premised on the claim that it is designed to improve people’s health, yet it is not applied to any food or beverage that is unhealthy other than sugar. So is sugar the prime cause of bad health? According to a recent study, reported in this article, the answer is no. I wrote about that flaw of the soda tax in Time for a Salt Tax to Replace a Soda Tax?
Another concern, to which I’ve not given much attention, is the inequity of taxing sweetened beverages based on the number of ounces in the beverage rather than the amount of sugar. If the primary goal of the soda tax is to reduce sugar consumption, then even aside from the failure to tax solid forms of sugar, the tax should reflect the amount of sugar in the drink. Some sugary beverages contain twice or three times the sugar in a given number of ounces than do other sugary beverages.
All of these concerns, along with the silliness of taxing some items that are healthy despite having some sugar content, have contributed to my conclusion that the soda tax is designed for revenue production rather than health benefits. Taxing beverages is much easier than taxing all sugar-containing substances based on the number of grams of sugar in a particular substance. In a number of my commentaries on the soda tax I have suggested that it was designed as a revenue raiser. And now we have the proof.
According to this Philadelphia Inquirer story, “Mike Dunn, a spokesperson for Mayor Jim Kenney, said the health benefits of Philadelphia’s tax ‘have always been secondary to the primary goal’ of funding important city programs.” Wow. For quite some time, Kenney and other advocates of the soda tax have claimed that they proposed the tax in order to improve the health of people living in Philadelphia. As I, and others, have repeatedly emphasized, if reducing sugar consumption was the primary motivation for the tax, it would have been, should have been, and could have been, applied to all foodstuffs and beverages containing sugar. That approach, of course, would permit reduction of the tax to a level that would not have the adverse financial impact on businesses and consumers that the existing soda tax has caused.
The researchers determined that a tax on “high sugar snacks” would reduce a person’s weight by an average of 1.3 kilograms (almost 3 pounds) over a year. In contrast, the soda tax reduces a person’s weight by an average of just 203 grams over one year (less than half a pound). That’s a six-fold difference.
The researchers suggest that taxing “high sugar snacks” is something "worthy of further research and consideration as part of an integrated approach to tackling obesity." They point to the fact that their study lasted only one year, though they are confident that running a similar study over a longer period of time would not generate different outcomes.
What is particularly annoying about the soda tax is that its advocate fail to address the questions I, and others, have raised about its scope and effectiveness with respect to obesity. Now that a study confirms that obesity involves more than sugar-sweetened beverages, perhaps the advocates of soda taxes can refine their thinking and legislators at every level can go back to the drawing board.