Elastic resistance
Learning Center
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Can vitamins help prevent a heart attack?
Study results are mixed on whether vitamins can prevent heart disease. Find out more.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Klinefelter syndrome
This genetic disorder occurs when a male is born with an extra copy of the X chromosome and may result in low testosterone production and infertility.
Henoch-Schonlein purpura
Learn about the symptoms, causes and treatment of this blood vessel disease, also called IgA vasculitis, that causes a purplish rash on the lower legs.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
Erectile dysfunction: Nonoral treatments
Get the facts about shots, penis pumps and other ED treatments that don't involve taking medicine by mouth.
Why isn't there a hepatitis C vaccine?
Hepatitis C vaccine development is far from straightforward, but experimental vaccines are under study.
Prostate cancer
Learn about detection, diagnostic approaches, treatment options and advances for prostate cancer, including robotic prostatectomy and current research.
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