I go with the Science and Evidence. Opinions are useless in the face of overwhelming Evidence. Another authority on Cancer:
http://www.cancer.org/Cancer/CancerCauses/OtherCarcinogens/AtHome/aspartameIn the largest study of this issue, researchers from the NCI looked at cancer rates in more than 500,000 older adults.
The study found that, compared to people who did not drink aspartame-containing beverages, those who did drink them did not have an increased risk of lymphomas, leukemias, or brain tumors.What expert agencies sayExpert agencies in the United States and elsewhere that have evaluated aspartame have found it safe for use.
The Food and Drug Administration (FDA) regulates the use of aspartame and other artificial sweeteners in the United States. In 2007, the FDA stated:
Considering results from the large number of studies on aspartame's safety, including five previously conducted negative chronic carcinogenicity studies, a recently reported large epidemiology study with negative associations between the use of aspartame and the occurrence of tumors, and negative findings from a series of three transgenic mouse assays, FDA finds no reason to alter its previous conclusion that aspartame is safe as a general purpose sweetener in food.
The European Food Safety Authority (EFSA) assesses the safety of sweeteners such as aspartame in the European Union. According to a 2009 report from its Panel on Food Additives and Nutrient Sources Added to Food:
Overall, the Panel concluded, on the basis of all the evidence currently available… that there is no indication of any genotoxic or carcinogenic potential of aspartame and that there is no reason to revise the previously established ADI for aspartame of 40 mg/kg [body weight].
Though research into a possible link between aspartame and cancer continues, these agencies agree that studies done so far have not found such a link.