This device allows people to train out a third of the food they just ate from their stomach. Gross! 

 Their website says:

"The aspiration process is performed about 20 minutes after the entire meal is consumed and takes 5 to 10 minutes to complete. The process is performed in the privacy of the restroom, and the food is drained directly into the toilet. Because aspiration only removes a third of the food, the body still receives the calories it needs to function. For optimal weight loss, patients should aspirate after each major meal (about 3 times per day) initially. Over time, as patients learn to eat more healthfully, they can reduce the frequency of aspirations..."