My experiences with NutraSweet, and those of my family members, have been painful. Its use correlates to chronic headaches, sinus problems and in some instances nausea among people in my family. I know other people who’ve noticed similar symptoms. On the other hand I know people who use it all the time and have no problems. Maybe (I’m guessing) there is varying tolerance for the stuff depending on different genetic factors and/or environmental factors.
The idea that NutraSweet is unsafe is backed up by some research that was posted earlier in this thread, but that doesn’t mean that refined sugars are safe. They are simply less unhealthy than Aspartame, unless you are diabetic of course.
The IDEAL thing would be for all of us to lose the sweet-tooth.
Simple sugars in the amounts most of us in the industrialized world eat are unhealthy and also environmentally irresponsible. Try a piece of fruit or some orange juice instead.