Nutrition basics
Learning Center
Post-vasectomy pain syndrome
Learn about post-vasectomy pain syndrome (PVPS) — How it happens after a vasectomy, tests to diagnose it and treatment options.
Pituitary tumors
Learn more about the symptoms, causes and treatment of growths that develop in the pituitary gland.
Phenylalanine in diet soda: Is it harmful?
You may be worried about phenylalanine because of a warning on diet soda. Find out why the warning is there.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
Penis-enlargement products: Do they work?
Considering penis enlargement? Get the facts about male-enhancement pills, pumps, exercises and surgeries.
Penis pump
Find out how this device can be placed on your penis to create an erection.
Penis health: Identify and prevent problems
Understand the factors that affect penis health and how to identify problems.
Penis fracture: Is it possible?
Know the symptoms of this health concern.
Penile implants
Explore your choices and learn what to expect from penile implant surgery.
Pap smear
A Pap smear, also called a Pap test, is used for cervical cancer screening. Learn how it's done and what the results might mean.
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