Nutrition basics
Learning Center
Get to know the new Nutrition Facts label
The recently revamped label makes it easier than ever to make healthy food choices. Get the facts from a Mayo Clinic dietitian.
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Video: Allergy tests
What happens in an allergy test? Watch this video and find out.
Video: Colonoscopy
See what a doctor sees when you undergo an examination of your colon.
Video: Sentinel node biopsy for melanoma
Video shows sentinel node biopsy to determine whether melanoma has spread.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Video: Endoscopy
An endoscopy allows your doctor to view your esophagus, stomach and part of the small intestine. Here's how it works.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Stress fractures
Stress fractures are tiny cracks in bones often caused by overuse or osteoporosis. Learn how to prevent and treat them.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
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