How can mineral water have 0 calories?

Question

I understand that obviously water does not have calories, but the water we drink is not pure and contain other nutrients and minerals on it.

How can it still be 0 calories with these nutrients added? Is it really 0 calories or is the caloric content just extremely low (therefore they round it down to 0)?

In: 0

Answer 1

Calories (units of energy) are obtained from three main sources: carbohydrates, proteins, and fats. Your body can also get calories from other things like alcohols. But what they all have in common is that they’re larger molecules that can be broken apart to release energy to fuel the cell’s machinery for energy production.

Minerals are usually ions dissolved in water, or they come in very simple ionic molecules that separate out when dissolved in the body. They can’t be broken for energy, they’re just used as building blocks.