If you're trying to lose weight, cutting back on vodka or other types of alcohol is a good place to start. Alcohol has no nutritional value, but it does contain about 7 calories per gram. Although the link between alcohol and weight gain has not been well-studied, the Centers for Disease Control and Prevention reports that the average American adult consumes nearly 100 calories per day from alcoholic beverages.
One serving of Skyy Vodka is reported to have 70 Calories, according to the nutrition facts provided by livestrong.com.
A 1-ounce serving of Skyy vodka contains about 60 calories. That's the same number of calories you'll find in any brand of 80-proof vodka, as well as other spirits, such as tequila and whiskey. Adding tonic water, lemon-lime soda or cranberry juice will add significant calories and sugar to your drink of vodka. If you prefer mixed drinks, add some club soda and a twist of lemon or lime to add flavor without increasing the calories.