This weight-loss device locks your jaw nearly shut. Experts say that’s dangerous and barbaric. – The Washington Post

Seven obese women were outfitted with the device for two weeks, according to the study. They lost an average of just more than 14 pounds in that time span, or about 5.1 percent of their body weight, but gained about 1.6 pounds back in the two weeks after the trial ended. The participants in the study all had a body mass index (BMI) over 30.