Too many snacks:

In 1977, Americans reported eating about 186 calories outside of mealtimes. By 1994, that had rocketed to 346 calories. It’s likely even higher now. That difference alone is enough to explain the changes in our national waistline. And it won’t go away if we begin cooking dinners but still are purchasing 20-ounce bottles of Coke at the office.

Further thoughts on home cooking and snacks from TNC, Yglesias, and James Joyner.

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