Gastric sleeve is a surgical weight loss procedure which your stomach is reduced by removing the lateral to about 25 percent. This surgery reduces your stomach size of a tube or sleeve like structure. The holding capacity of the stomach is about 1.54 liters of liquid and food down to about 200 ml. The normal movement of food from your mouth into your stomach and then into the intestinal tract is not altered. There’s no malabsorption to nutrient as there’s with the bypass gastric procedure. Despite the stomach being smaller, the sleeve of your stomach still functions normally. Nutrients and food continue to enter and leave in the same manner. Acid is made to help digestion continuously, and essential minerals and vitamins such as calcium, folate, B12 and iron can be absorbed normally.