Diet plans
Learning Center
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
HPV vaccine: Who needs it, how it works
Learn about how the HPV vaccine works, who needs it and what side effects to expect.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Heart disease in women: Understand symptoms and risk factors
Heart disease and heart attack symptoms may be different in woman than in men. Know the warning signs and learn ways to protect your heart.
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.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
Hormone therapy for prostate cancer
Find out what to expect during testosterone-blocking therapy. Learn about choices, including medicines and surgery.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Hypospadias
Hypospadias is a birth defect in which the opening of the urethra is located on the underside of the penis instead of the tip. Learn about treatment.
Incompetent cervix
Sometimes the cervix opens and thins early, putting a pregnancy at risk. Learn more about this hard-to-diagnose condition.
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