Diet Coke contains aspartamine - that is just one of the several toxic chemicals in the ingredients.
http://www.theecologist.org/archive_...content_id=636
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Although Diet Coke has a strong association with sport and health, it is actually a worrying mixture of neurotoxic and potentially carcinogenic high intensity sweeteners (aspartame and acesulfame K), tooth and bone destroying acids (phosphoric acid) and DNA damaging colourings (sulphite ammonia caramel), as well as psychoaddictive caffeine and other undisclosed ‘flavourings’.
It also contains sodium benzoate, which can be broken down into the listed carcinogen benzene in the presence of strong acids, such as the citric acid found in this product.