Nutrition basics
Learning Center
Video: Vagus nerve stimulation
Watch how vagus nerve stimulation works.
Virtual colonoscopy
Unlike other colon cancer screening tests, this imaging test doesn't use a scope to examine your colon. Learn how it works and what to expect.
Vitamin D deficiency
What are the risks of too little vitamin D?
Vitamin D deficiency: Can it cause high blood pressure?
Too little vitamin D is bad for the bones, but what about the heart? Learn how a low vitamin D level may affect blood pressure.
Von Willebrand disease
Learn more about the symptoms, causes, diagnosis, treatment of this inherited bleeding disorder in which blood doesn't clot well.
Vulvar cancer
Learn about this rare cancer that forms on the skin that surrounds the urethra and vagina. Treatments include surgery, radiation and chemotherapy.
Vulvodynia
Learn about pain, burning and irritation of the vaginal area that doesn’t have a clear cause. Then find out how to get relief.
Warfarin diet: What foods should I avoid?
Certain foods and drinks may affect how the blood thinner warfarin works. Know which foods and beverages are OK when you're taking the medicine.
Warfarin side effects: Watch for interactions
This common treatment for blood clots may cause concerning side effects. Know which medicines interact with warfarin and how to take the medicine safely.
Water breaking: Understand this sign of labor
Learn how to tell this sign of labor and what do next.
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