ASPARTAME – There is a huge amount of negative information about it.
Link to a wonky Youtube vid, and you’re in Kaesae territory.
Anyway, 4th, legitimate peer review study based, link down:
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].
Aside from the possible effects in people with phenylketonuria, there are no health problems that have been consistently linked to aspartame use. Research on artificial sweeteners, including aspartame, continues today.
http://www.cancer.org/cancer/cancercauses/othercarcinogens/athome/aspartame