ScienceDaily have an article on new research on artificial sweeteners.
Want to lose weight? It might help to pour that diet soda down the drain. Researchers have laboratory evidence that the widespread use of no-calorie sweeteners may actually make it harder for people to control their intake and body weight. Cutting the connection between sweets and calories may confuse the body, making it harder to regulate intake.
You can read the full article at ScienceDaily.