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Pure alcohol contains 7 calories per gram,
this is less than a gram of fat, which has 9 calories, but more than protein
and carbs, which have 4 calories per gram each.
The biggest variable of your drinks that influence the calorie counts
the amount of alcohol, the total volume of a beverage including the amount of
carbohydrates and sugars and mixers you add to the alcohol.
Most spirits, including vodka, tequila,
rum and gin, do not contain any carbohydrates or sugars. Some producers may add
small amounts of sugar to combat any perceived bitterness, but this small
amount would not bump the calorie count much. Though they have higher alcohol
by volume, the volume of a standard shot is small, making them a relatively
lower-calorie option, if you can stick to one shot or mix it with a
zero-calorie beverage, like ice, water, diet cola, soda water or seltzer. Other ingredients including mixers, tonic
water, juice, soda, syrups, cream and coconut, pack sugar and fat calories on
top of alcohol and should be consumed with caution. "Margaritas and pina coladas can have
close to 500 calories per drink, depending on the size and how it's made, and
could be a real challenge for anyone trying to lose weight.