A method of affecting a weight loss treatment comprising the step of providing an implant for placement within a hollow body organ. The implant comprising a member having an undeployed shape for delivery within a hollow body and one or more deployed shapes for implantation therein. The member has sufficient rigidity in its deployed shape to exert an outward force against an interior of the hollow body so as to bring together two substantially opposing surfaces of the hollow body. The implant also includes a means for changing the deployed shape of the member while implanted within the hollow body. The method further includes the steps of implanting the implant within a patient, implanting a data gathering device within the patient, collecting physiological data of a patient relating to the implant, and comparing the data to a fixed value and changing the shape of the member.