A can of Budweiser contains 145 calories, about half as many as a slice of pizza. A shot of vodka? Sixty-five calories, equivalent to the amount in a fresh Gala apple.

These types of calculations are becoming increasingly common due to the growth of a trend that a New York Times article recently dubbed “drunkorexia” — the altering of eating habits for the purpose of consuming alcohol.

Because of a concern with weight or calorie consumption, students, particularly women, are watching what they eat before they head out to a bar or a party.

“I’ve noticed that girlfriends will compensate calorie-wise. They know the calories in what they’re drinking, so they eat less food, so they don’t have to feel guilty,” Tufts University senior Eve Young said.