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.
Chronic Stomach Conditions. Chronic (long-term) stomach conditions can often cause nausea and vomiting, along with other symptoms, such as diarrhea, constipation, and stomach pain. These chronic conditions include food intolerances, such as gluten intolerance (celiac disease), and dairy protein and lactose intolerance.