Question: What Is a Controlled Experiment? One of the most common types of experiment is a controlled experiment. Here is a look at what a controlled experiment is and why this type of experiment is so popular in science. Answer: A controlled experiment is one in which everything is held constant except for one variable.
Symptoms of inflammatory bowel disease (IBD), including ulcerative colitis and Crohnâs disease, primarily affect the digestive tract and include appetite loss, diarrhea, weight loss, rectal bleeding, nausea, and abdominal cramping.
In addition, simple distension of the colon can cause nausea. The other possibility is that the constipation is not causing the nausea--but that both the nausea and constipation are caused by the same process. For example, dehydration can cause both. So can the serious condition of bowel obstruction.