Atkins advised against aspartame, particularly if you are prone to migraine head aches and I can vouch for the fact that aspartame can trigger a migraine. My husband’s migraines decreased dramatically when I made him stop using it, and especially took away diet sodas containing it.
One time, he went back to visit his mother and I told her in no uncertain terms not to give him aspartame. His last day there, she ignored my advice (orders) and fixed him strawberries sweetened with aspartame and then bragged about it to me. Of course he had a miserable flight home because of terrible migraine head ache. I made sure to tell her.
Ah...for the good old days of Tab with saccharin. ;)