Vasopressin has three main effects: 1  Increasing the water permeability of distal convoluted tubule and collecting duct cells in the kidney, thus allowing water reabsorption and excretion of more concentrated urine, i.e., antidiuresis.
Some of the complications of gastroparesis include: 1  Food that stays in the stomach too long can ferment, which can lead to the growth of bacteria.  Food in the stomach can harden into a solid collection, called a bezoar. Bezoars can cause obstructions in the stomach that keep food from passing into the small intestine.
9 Potential Causes For Severe Stomach Pains. 2. Lactose Intolerance. Lactose intolerance causes, simply, a lack of the enzyme, lactase, which makes it impossible to digest lactose (or the sugars in dairy). Typically symptoms such as gas, abdominal pain, cramps, nausea, bloating, diarrhea, and even vomiting will occur within 30-minutes of consuming a dairy product.