However the main function of the small intestine is the absorption of the small food particles resulting from digestion. It contains many villi which increase the surface area for absorption. The large intestine moves the material that has not been digested from the small intestine and absorbs water.
Respiratory failure caused by botulism can result in death. About 50 years ago half of all patients with botulism died, compared to just 8% today. Patients with severe symptoms may need a breathing machine, intensive medical and nursing care for several months. Fatigue and shortness of breath may linger for many years.
Although botulism can cause severe and prolonged symptoms, most people recover completely from the illness. Early treatment reduces the risk of permanent disability and death. However, even with treatment botulism can be fatal. Without treatment, more than 50% of people with botulism would die.