Pure alcohol contains about 7 calories per gram, which makes it nearly twice as fattening as carbohydrates or protein (both contain about 4 calories per gram) and only just under the caloric value for fat (9 calories per gram). This means that if you want to lose weight and reduce excess body fat, alcohol is not a good choice.
Alcohol Item (serving size) Carbs (g)
Beer, regular (12 fl oz) 13g
Beer, light (12 fl oz) 4.5g
Wine, red (3.5 fl oz) 1.75g
Wine, rose (3.5 fl oz) 1.5
Wine, white (3.5 fl oz) 1g
Cider, dry (1 pint) 15g
Gin, Rum, Vodka, Whisky (1 fl oz) 0g
Sherry (2 fl oz) 3g
Port (2 fl oz) 6g
Guinness (1/2 pint) 4g
http://shapefit.com/alcohol-calories.html