No, the study is saying that there is no reliable way (within the norms of modern western society) a third party can convince an obese individual to put down th

No, the study is saying that there is no reliable way (within the norms of modern western society) a third party can convince an obese individual to put down the fork. It says nothing about whether an obese individual will lose weight if they do choose to eat less. Clearly they can - gravity is not causing food to fly into their mouth whether they want it or not.