I’ll go out on a limb and say that everyone should avoid “slushies” as they’re nothing but frozen sugar.
But anyway, the scientists agree:
“From a public health perspective, there are no nutritional or health benefits from these drinks and they are not recommended as part of a balanced diet. Recommendations on their safe consumption therefore need to be weighted towards safety.”
Well glycerol is not sucrose but it has more calories per gram than sucrose and the FDA requires the glycerin content per serving to be declared as sugar alcohol.
>Glycerin (sometimes spelled glycerine), or glycerol, is a sweet, syrupy liquid that is about 75% as sweet as sucrose. It is chemically categorized as a polyol with 4.32 kcal/g. ... If the label has a statement regarding sugars, the FDA requires the glycerin content per serving to be declared as sugar alcohol.
https://diabetesjournals.org/spectrum/article/17/3/137/2007/...