In the UK (the study was covered the UK and Ireland) using glycerol rather than sugar avoids the "sugar tax" on sugar in drinks (I assume slushies as taxed at d

In the UK (the study was covered the UK and Ireland) using glycerol rather than sugar avoids the "sugar tax" on sugar in drinks (I assume slushies as taxed at drinks). The tax was imposed mostly to encourage people to consume healthier sweeteners instead of sugar.