Thank you for the posting on Aspartame. When it first came out my endocrinologist told me to stay away from it. I have hypoglycemia and considered a sugar free diet. He noted that he still had a lot of questions about the safety of the item and was routinely warning his patients to watch for adverse reactions and to avoid this additive if possible. So I cut down my sugar intake, stayed away from diet foods containing NutraSweet and felt better.
I found out a couple of years later that I was allergic to Aspartame because I had difficulty breathing and a severe headache after consuming coffee containing it. I drank that brand of coffee regularly at that time with no problems. It only took a short amount of time to pin it down. Now I stay far away from the stuff and list it as an allergy on my medical alert card.