Research from a British university suggests a common preservative found in drinks such as Fanta and Pepsi Max has the ability to switch off vital parts of DNA. The problem - more usually associated with ageing and alcohol abuse - can eventually lead to cirrhosis of the liver and degenerative diseases such as Parkinson's.
Sodium benzoate, the preservative in question, isn't only found in the soft drinks above. It's also found in Sprite, Dr. Pepper, and Coke as well as in pickles and sauces. An added bonus -- when Vitamin C is also in the drink (as many brands proudly declare), the combination produces benzene. Not exactly the kind of fuel your body needs.