Aspartame
Also known as: L-aspartyl-L-phenylalanine methyl ester
SweetenersFlavor Enhancers
Safety rating
Use Sparingly
Eat Away!Generally SafeUse SparinglyAvoid
Purpose and Function
Aspartame is a low-calorie artificial sweetener roughly 200 times sweeter than sucrose, widely used across diet beverages, sugar-free products, and tabletop sweeteners. It's broken down into aspartic acid, phenylalanine, and methanol when metabolized.
Commonly found in
- —Diet sodas and flavored waters
- —Sugar-free gum, candies, and desserts
- —Tabletop sweetener packets
- —Yogurt and ice cream
Key functions
- —Sweetens intensely (~200x sweeter than sucrose) with minimal calories
Potential Risks and Side Effects
- 01Must be avoided by people with phenylketonuria (PKU), who cannot metabolize phenylalanine — required warning label on products
- 02IARC (WHO) classified aspartame as "possibly carcinogenic to humans" (Group 2B) based on limited animal evidence; the FDA and other regulators maintain it's safe within acceptable daily intake levels
- 03Some studies suggest possible links to headaches, dizziness, or mood changes, though evidence is not conclusive at typical consumption levels
References
- [1]IARC monograph on aspartame — International Agency for Research on Cancer