A gastrointestinal stimulation system includes a remote controlled capsule adapted for positioning in the gastrointestinal tract (GT) of a patient, in which the capsule is secured to the inner wall of the gastrointestinal tract (GT) of a patient by a magnetic coupling system. The capsule is configured to activate at least one chosen area of the patient's GI tract, including when desired, the vagus nerve, thereby facilitating gastro motility or having other interaction with the GI tract, such as monitoring thereof. The remote controlled capsule also may be configured to activate patient's lower esophageal sphincter (LES), stimulating the LES muscle and restoring the barrier between the stomach and the esophagus for treatment of Gastroesophageal reflux disease (GERD). The capsule also may be inserted to the anal canal for treatment of constipation.