Not to sound like a broken record, but if you do one...and only one thing to maintain/improve your health...stop consuming aspartame or artificial sweeteners. It is just not worth the risk! There are alternatives that won't make you or your loved ones sick.
Here is an article from www.preventdisease.com (click and go) that can explain it a million times better than I can. It is long, but worth reading to the end.