Hypnosis to lose weight? What is the evidence that weight loss through hypnosis works? Many celebrities rank weightloss hypnosis as their key to shedding the bad habits that prevent lasting weight loss. To lose weight permanently, we have to re-program our minds, and weight loss hypnosis is a proven way to do this. Here, we provide the evidence that hypnosis is an ideal way to uncover the barriers to permanent weight loss. Hypnosis allows thoughts to be re-programmed, and weight loss occurs through hypnosis as the mind associates new beliefs with food.