Ever wonder how many calories are in a beer only to turn the bottle around and see there's no nutrition label? That's about to change. The three biggest beer producers in the U.S. (Anheuser-Busch, MillerCoors, and Heineken USA) agreed to follow The Brewers’ Voluntary Disclosure Initiative, a set of guidelines developed by The Beer Institute.

As part of the agreement, the companies will disclose calories, carbohydrates, protein, fat, and alcohol by volume of their products by 2020. It's a big step in the right direction, but the guidelines have one major caveat: Nutrition information doesn't necessarily have to be on the bottle or can, so long as a QR code or link to the information is on the product.

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