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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.
White stool: Should I be concerned?
White stool may mean a serious liver problem. Learn about causes.
Whipple's disease
Learn more about the symptoms, causes and treatment of this rare primarily digestive infection.
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.
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.
Weight-loss surgery: Is it an option for you?
Weight-loss surgery is one part of a treatment plan for weight loss. Learn about the criteria and what is expected of you.
Vitamin B-12 and depression: Are they related?
Low levels of vitamin B-12 and other B vitamins may be linked to depression, but more research is needed.
Vasculitis
An inflammation of the blood vessels, vasculitis may thicken and weaken blood vessel walls. If blood flow is restricted, organ damage can occur.
Vaginal fistula
Learn about this unusual opening that forms between the vagina and another organ.
Upper endoscopy
In this simple procedure, a tiny camera is used to visually examine your upper digestive system. Find out what to expect.
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