Apparatus and methods for corrective guidance of eating behavior after weight loss surgery

An apparatus for data collection and interpretation of eating behavior patterns of a patient equipped with a gastric restriction apparatus (GRA) comprising:

• a) monitoring means comprising an NIR source and a near infrared detector for monitoring at least one physical parameter directly related to the food consumed;
• said food is characterized by said at least one physical parameter;
• and
• b) an intra-corporal emergency relief mechanism used to automatically relieve pressure developing due to said food currently passing through the GRA;
• wherein said at least one physical parameter comprises nutrient caloric value and optionally at least one physical parameter is selected from the group consisting of viscosity of a bolus of said food, density of a bolus of said food, quantity of a bolus of said food, the time of passage of a bolus of said food, interval between a pair of boluses of said food, duration of a meal, and a pressure applied onto said GRA by said bolus of said food.