You might think “zero calories” means there are no calories in something, but that’s where you’d be wrong.
In the above video, YouTuber Alex Nickel gives a scientific breakdown of exactly why Splenda — a U.S. sugar substitute that claims to be “zero calorie” — is actually… well, not really zero calorie at all.
Turns out in the U.S., foods with “less than 5 cal per labelled serving” can be classified as “zero calorie,” according to the Food and Drug Administration . Also, just because something is “zero calories” doesn’t mean it doesn’t have anything harmful in it, either.
In Splenda’s case, “zero calorie” actually means 4 calories per serving (still not a lot, admittedly, but definitely more than zero).