Most patients will have less bowel movements with time after such an operation. Nevertheless, most patients will have more frequent and looser stools than the general population. A variety of foods have been associated with increased stool frequency. If weight loss is a problem, it is recommended to try oral nutritional supplements and to take in enough fluids to prevent dehydration. It is also important to review the medications that your wife is taking.
Many medications can exacerbate diarrhea.
A number of medications to slow intestinal transit can be helpful as well. Topical agents for perianal irritation may also be needed especially if incontinence is a problem. It is also important to exclude a superimposed intestinal infection. They also cite a previous study which concluded that soft, formed stools and a daily average of 4-6 bowel movements per day occurred in individuals who consumed a high fiber diet, limited concentrated sweets, separated fluids from meals and avoided caffeine. It is important to discuss your problems with your colorectal surgeon prior to considering another operation.