The University of Otago and out of the UK have created an interlocking magnet device that attaches to your teeth and prevents you from opening your mouth more than 2mm, restricting you to a liquid diet. This theoretically will helps you lose weight. Read their full statement here: https://www.otago.ac.nz/news/news/releases/otago830110.html Video by: https://youtu.be/-xaHk2stkZw