The long answer: whiskey, like all alcohol, packs a heavy punch of calories in a small volume. If weight gain is an issue for you and you are counting calories, it is in your best interest to stay away from alcohol. It is no coincidence that heavy drinkers also tend to have bulges around the midsection, or the so-called “beer belly”.
Not only is alcohol high in calories, but those calories are also “empty” calories which have no additional nutritional value. This means that when you drink whiskey you’re adding to your overall caloric intake, but these calories have no value for your body as far as nourishment. Your body will still crave the food it needs to meet its nutritional requirements, and the whiskey will simply be additional calories.
In addition, alcohol is absorbed quickly in the stomach and large intestine and converted directly into sugar. This process leads to a high spike in blood sugar levels when a person consumes alcohol, especially on an empty stomach. People with metabolic syndrome or other diabetic issues need to be aware of this fact and modify their alcohol consumption accordingly.