Final answer:
Up to 90% of celiac disease cases may be unrecognized, due to its varied symptoms and being misdiagnosed with other conditions.
Step-by-step explanation:
Up to 90% of celiac disease cases may be unrecognized. Celiac disease is an autoimmune disorder that results from a reaction to gluten, found in wheat, barley, rye, and some other grains. The disease can lead to damage to the villi of the small intestine, causing symptoms such as diarrhea and anemia, as well as potential long-term consequences like osteoporosis and certain cancers. Due to varying symptoms and misdiagnoses, many cases remain undiagnosed, leading to the high percentage of unrecognized cases.