The resulting reconfiguration of the digestive tract gives patients a feeling of fullness, even when they eat small amounts of food. Because the reconfigured digestive tract bypasses the part of the intestines where calcium and iron are absorbed into the bloodstream, anemia and osteoporosis are common long-term complications of gastric bypass surgery. Bypass patients must therefore take lifelong calcium and iron supplements to guard against these two conditions.
The proximal gastric bypass, RYGBP, results in little malabsorption — that is, patients still receive the nutritional benefits of the foods they eat. However, some surgeons modify the RYGBP to incorporate an element of malabsorption to increase weight loss in some critically obese patients.
*Weight loss results can vary depending on the individual. There is no guarantee of specific weight loss results or recovery time.