This was used in conjunction to a unit on body systems.
In my class, students were identified as "doctors" for the lesson, then put into small groups and were asked to become a medical expert on a digestive disorder.
These were Crohn's disease, GERD, Cystic Fibrosis, Coeliac, Gastroenteritis and Irritable bowel syndrome.
Each team of doctors then presented to the class and their peers had to answer the questions on the sheet as they went.
Alternatively, this could just be done individually or in small groups as a research task.
Worksheet can be adjusted as required.