STOP DRINKING ASPARTAME. The International Agency for Research on Cancer (IARC) has classified aspartame as "possibly carcinogenic for humans". It's linked with all sorts of nasties such as: --> Stomach irritation --> Kidney/liver damage --> Anxiety/Hyperactivity Likely the worst low-calorie sweetener you could consume and the reason we opt for MONK FRUIT instead - the superior low-calorie sweetener...