Eli5 how are calories measured in food
In: 23
They aren’t! At least not much any more
To measure how many kCal a food contains, you have to burn it, and see how much water it can boil off.
Most governments require you to make an estimate on the total calories based on the ingredients.
In either case, it’s extremely variable.
This is why most modern dieticians don’t recommend calorie counting for weight loss; These estimates can vary by as much as 20%
Latest Answers