Methods, systems and devices for monitoring the health and energy expenditure of a living body, treating patients with an eating disorder or treating obese patients are described. The methods, systems and devices described may also be applicable to any treatment in which presenting feedback regarding patients' eating and exercise habits is desired. The present invention provides for treating a patient by collecting ingestion and exercise information about the patient from implanted sensors and communicating the collected information to the patient and/or to their health care provider(s). In some embodiments, stimulation of the patient's stomach is also provided to reduce caloric intake.
