How can a product consist of ingredients that contain calories, but the product has zero calories itself?

Question

How can a product consist of ingredients that contain calories, but the product has zero calories itself?

In: 19

Answer 1

Extremely baffling to read the US has a law like this (rounding calories down) as a European (much stricter consumer product / food laws that protect the customer & not corporations here).

But also, fun fact – Uranium has BILLIONS of calories PER GRAM. You just can’t digest and absorb them all.