If there is a difference between the biology of the rats and humans, shouldn't there be questions about all other products that were tested using this method? Why are food products tested by the manufacturer and not an independent laboratory? Mice and rats are used for testing food and drugs because their biology is similar to ours, but if this is not the case then how can we trust anything that the FDA has to say? If this same method is used to test other artificial sweeteners, are exemptions being made for these products as well? If a product is found to be carcinogenic but can still be sold so long as it has a warning label on it, does that mean mass murder is okay so long as you have a warning label? Euthanasia is considered to be illegal in this country, but it's okay to buy a product that will kill you?