Artificial Sweetener Side Effects: On a diet? Here’s surprising news for you. Don’t use artificial sweeteners. These can make you fat. Contrary to previous claims — and despite the fact that they have fewer calories than real sugar, if any — artificial sweeteners don’t help you lose weight. And new evidence shows that they can even encourage weight gain.
This was the conclusion of Dr. David S. Ludwig of the Children’s Hospital Boston in his Ask a Doctor article published in the December 2011 issue of the Harvard Health Letter, a Harvard Medical School publication.