Aspartame
What you need to know
Aspartame is an intense sweetener, about 200 times sweeter than sugar. It lets drinks taste sweet with almost no calories.
In 2023 two expert groups looked at the same evidence and reached different-sounding conclusions. The cancer-research agency IARC classified it as “possibly carcinogenic” (Group 2B). The food-safety committee JECFA reviewed the same studies and kept its acceptable daily intake unchanged.
What both agree on: at normal consumption levels there is no proven harm for the general public. People with the rare condition PKU must avoid it because it contains phenylalanine.
Where it stands, by region
The same additive can be approved in one country and banned in another. This is the divergence that matters most.
| 🇦🇺AU / NZ | Approved Permitted; PKU advisory statement required (“contains phenylalanine”). |
| 🇪🇺EU | Approved Permitted; PKU advisory required. ADI reaffirmed 2013. |
| 🇺🇸US | Approved Permitted; PKU advisory required. FDA reaffirmed safety 2023. |
| 🇨🇦CA | Approved Permitted; PKU advisory required. |
Health evidence
How settled the science is for each area — not how dangerous. “Unknown” means not enough good studies yet.
Chemical name: methyl L-α-aspartyl-L-phenylalaninate. A methyl ester of a dipeptide. Acceptable Daily Intake 40 mg/kg body weight per day (EFSA, 2013); FDA sets 50 mg/kg.