Dueling Studies: For Every Study Saying Aspartame is Harmful, Another Says it is Not

For every study saying aspartame is harmful, another says it is not. Hundreds of studies throughout the world have been performed with aspartame. Here’s just a tiny sample of contradictory studies, with a summary of their conclusions.


From the Massachusetts Institute of Technology, published in the American Journal of Clinical Nutrition (September 1998):

  • “Large daily doses” of aspartame for 20 days had no effect on nerve function or behavior of healthy young adults.

From the Bronx Department of Veterans Affairs Medical Center, published in Epilepsia (March 1995):

  • After five days of “acute dosage,” aspartame was “no more likely” than the placebo to cause seizures.

From the Yale University School of Medicine, published in Annals of Neurology (January 1994):

  • When epileptic children were given aspartame for two weeks, researchers concluded it did not provoke seizures.


From the University of Washington, published in Neurology (October 1994):

  • Research concluded after seven days that aspartame causes headaches in some people, and these individuals “may want to limit their consumption.”

From Northeastern Ohio Universities College of Medicine, published in Biological Psychiatry (July 1993):

  • After a week of aspartame consumption, researchers reported that people with mood disorders, such as unipolar depression, experienced more severe symptoms of these disorders, and aspartame use “in this population should be discouraged.”

From the Washington University School of Medicine, published in Neurotoxicology (Fall 1994):

  • This review reports that foods that contain excitotoxins can “damage the brain,” particularly in children and the elderly.

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