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Via Matt Yglesias, here’s a chart from a recent Dept. of Agriculture study suggesting that a 20% tax on sugary soft drinks would reduce overall consumption of said beverages and thereby reduce our net calorie intake from all beverages:

By assuming that 1 pound of body fat has about 3,500 calories, and assuming all else remains equal, the daily calorie reductions would translate into an average reduction of 3.8 pounds over a year for adults and 4.5 pounds over a year for children.

Not so fast, I say. Even assuming that all the assumptions in the report are correct, all it does is show that our net calorie intake from beverages would, on average, go down. But if you switch to diet soda, it’s pretty likely that you’ll just make up the calories somewhere else. In fact, if this study is correct, it’s possible that you might increase your total calorie intake.

I’d actually be interested in some large state imposing a tax like this purely for research purposes, and since I don’t drink sugared soda I’d be happy to nominate California. We need the money anyway. But my guess is that the results would disappointing. People might end up swilling less high-fructose corn syrup, but they’d probably just eat more corn nuts to make up for it.

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And right now, we need to raise about $400,000 from our online readers over the next two months to hit our annual goal and make good on that mission. Read more about the information war we find ourselves in and how people-powered, independent reporting can and must rise to the challenge—and please support our team's truth-telling journalism with a donation if you can right now.

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