Is zero-sugar vitamin water genuinely calorie free?

If I drink 0 Sugar-Vitamin Water, does it genuinely have 0 calories or is it rounded down? I realise water is probably a better option, but I’m not a big lover.

There are 0 calories (or almost so).

However, because they are perceived as “sweet,” they may induce what is known as a “cephalic phase insulin response,” which may result in evaluated insulin levels that inhibit lipolysis, resulting in a reduction in available energy levels, which may eventually cause you to eat more food to alleviate a perceived energy deficit.

That being said, I consume approximately 1.1L of zero-calorie beverages each day, so I am not overly concerned about this effect, assuming it exists.

I also boiled down full-sugar ginger ale and zero-sugar ginger ale to observe what happens when you remove the majority of the water.
The full sugar ginger ale was reduced to a very syrupy concoction with the same sugar content.

There’s a product named Pepsi One. Each 12 ounce serving of Pepsi One contains about one calorie.

A 12-ounce portion of Diet Coke, Coke Zero, Caffeine Free Diet Coke, Diet Pepsi, or Caffeine Free Diet Pepsi contains less than one calorie. It is close enough to 0 that it can be completely ignored.

Whether or not eating as much Diet Coke as you like will disrupt your diet plan is not always an issue of calories. In fact, it’s fairly contentious. Some recent study has revealed that even if the artificial sweeteners used in diet drinks contain zero calories, they may cause responses in the body (i.e. insulin response similar to sugar, as well as impacts on gut bacteria) that could make it tougher.

They’re so close to zero that it doesn’t matter. A serving may include as many as 5 calories. That’s practically nothing, and much less than the error bars on your calorie allowance.

The short answer is that they are truly zero calorie.

The long answer is on how a “calorie” is measured. It is the amount of energy required to raise the temperature of 1 gramme of water by 1 degree Celsius; however, when measuring calories and calorie burn connected to food in the body, it is commonly measured as the amount of energy required to raise the temperature of 1kg of water by 1 degree Celsius.

Certain sweeteners or sugar substitutes, such as erythritol, sucralose, and aspartame, are classified as “zero calorie” or “calorie free” because they produce a sweetness comparable to table sugar but are not ABSORBED by the body.

Yes, most diet drinks contain 0 or very close to zero calories. A few may include maltodextrin, which has some caloric value, but only in small amounts. Don’t be fooled by diet-drink scare tactics. The studies linking artificial sweeteners to disease or weight gain are association studies, not double-blind controlled trials. Associative studies can be interpreted in a variety of ways to promote a person’s unique purpose.

Diet sodas sweetened with aspartame contain less than one calorie per serving, yet there is some energy present.

Ice Sparkling water is sweetened with sucralose, which is not digested, hence it contains no calories.

In the United States, if a product has fewer than 4 calories, it can just declare “fewer than 4 calories” and be done.

I’m quite sure zero sugar drinks don’t have any sugar; they do have some calories, but the amount is negligible. I’m not sure about strictly zero-calorie drinks, but the chemicals they do contain are probably not zero-calorie, but they have fewer calories than the zero-sugar version.

I know this because I had to boil down two 1.1L bottles of soft drink, one with full sugar and the other with 0% sugar, to make syrup.

0 calories is exactly that. It does not imply that there are no dangerous compounds in it; in fact, there are! Furthermore, drinking too much pure water can kill you.

They often aren’t. Food and beverages can claim to have “zero” calories if they contain fewer than 5 calories per serving. Obviously, less than five is not equal to zero.

Coke zero actually contains no sugar.

It does, however, include non-zero calories from the minor quantity of artificial sweeteners present, which can be legally rounded down to 0 kcal per serving.

If you want a really zero-calorie beverage, drink pure water instead.