The Claim
Consumption of aspartame is associated with increased methanol levels in the blood, although the clinical significance of this increase is not clearly established by current studies.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Eating or drinking things with aspartame might raise the amount of methanol in your blood, but we don’t yet know if that’s actually harmful or just a harmless blip.
See the scientific wording
Aspartame consumption is associated with increased methanol levels in the blood, though the clinical significance remains unclear based on available studies.
What the research says
1 studyStudy: Aspartame Metabolism in Normal Adults, Phenylketonuric Heterozygotes, and Diabetic Subjects
This study found that when people eat or drink aspartame, their blood methanol levels go up — which is exactly what the claim says. It doesn’t say if that’s harmful or not, but it does prove the link exists.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.