Feedback systems and methods communicate implanted sensor-based feedback signals to promote behavior modifications that ameliorate obesity and other eating disorders. The system and methods described may also be applicable to any treatment in which presenting feedback regarding patients' eating and exercise habits is desired. The present invention provides a method and system for treating a patient by collecting ingestion and exercise information about the patient from an implanted sensor and communicating the collected information to the patient, his or her physician and/or other health care providers. In some embodiments, stimulation of the patient's stomach is also provided to reduce caloric intake. In some embodiments, the collected data is transmitted to a central server. Further embodiments may provide access to additional information in conjunction with the collected patient information, such as a calorie database, an exercise planner, and so forth, with the data optionally being used within a social networking system.