This isn't novel research. A lot of it has to do with an effect where our bodies will secrete insulin in response to a sweet taste or even just something in our mouth. Insulin will decrease release of fat energy and turn on exclusive sugar metabolism. Without the expected influx of glucose, blood sugar will drop, making us hungry and stressed as we attempt to come back into homeostasis.

Some people underestimate the power of food cravings. The amount of willpower needed to overcome cravings as a result of starvation can be monumental. Some people have never experienced starvation level hunger in the first world. Some people experience it every day by choice.

Your brain will re-wire itself to think of nothing BUT food and how to acquire it. You notice colors associated with foods. Smell becomes heightened. I once smelled what the neighbor was cooking two doors down and felt an overwhelming urge to knock on their door. Commercials for food are endless. One time on a walk, a white-tailed deer walked by and I had the feeling of a NEED to run it down and kill it with my teeth.

Real hunger, experienced by people every day, is almost at the level of psychosis. Trying to hold a job, raise kids, keep a house, and have a relationship while starving yourself to not be fat is nearly impossible as it is. Artificial sweeteners aren't going to MAKE you eat. But they will make you even more miserable.