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What is wheatgrass? Why is it in my drink?
Wheatgrass is a popular addition to smoothies and other drinks. While it's a rich source of nutrients, it's not a disease cure-all.
Wheat allergy
Learn about the causes, symptoms and treatment of wheat allergy and how they differ from those of celiac disease. Managing either condition means avoiding wheat.
Whipple's disease
Learn more about the symptoms, causes and treatment of this rare primarily digestive infection.
White stool: Should I be concerned?
White stool may mean a serious liver problem. Learn about causes.
Zollinger-Ellison syndrome
In this rare disease, tumors in the digestive tract cause excess production of a certain hormone. High levels of this hormone increase stomach acid, leading to peptic ulcers.
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