I know I may be striking a nerve when I say this, but don't drink diet soda. It contains aspartame, which recently killed a family friend. To quote http://www.blacktable.com/gillin040317.htm "In the years since, a number of people have begun to attack NutraSweet, claiming that aspartame can be broken down into three amino acid components, aspartate, phenylalanine, and methanol. All three can be broken down into smaller entities, called metabolites, which can be toxic. For example, methanol, or wood alcohol, can spontaneously become formaldehyde, while phenylalanine can decompose into diketopiperazine, which is a carcinogen... In February 1994, the Department of Heath released a list of 92 symptoms that occurred when people had an adverse reaction to NutraSweet, one of which was death." Please, don't drink diet soda. Spread the word about aspartame. Sorry if what I said confuses you, but this is a really big issue.