O.K. you chemists out there, this question might be a little off the subject, but it is something I have always wondered. We know excesses of caffeine can decrease fertility, but what about this Aspartame? One of the posters to this thread said it was made up of naturally occurring amino acids, but it always gives me a migraine headache when I eat something with it in it. The only other thing that has ever given me a migraine was inhaling formaldehyde. (In a herbarium- they used to use it to preserve pressed plant specimens). Does Aspartame break down into the two amino acids it is made of or does the process of digestion break it into some other compound (like an aldehyde?)? Does anyone have an idea where I might find this information? I suspect it does, and the last thing I want in my system is formaldehyde whether I am trying to get PG or not!