First trimester
Learning Center
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.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Hormone therapy for prostate cancer
Find out what to expect during testosterone-blocking therapy. Learn about choices, including medicines and surgery.
High cholesterol in children: How is it treated?
High cholesterol in children can lead to narrowed and hardened arteries, increasing the risk of heart disease later in life.
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.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
Groin pain (male)
Learn more about the causes and symptoms of this type of pain. Also find out how you can treat it at home and when to get a checkup.
Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer. But other research hasn't supported this idea.
Fetal development: The 1st trimester
Fetal development begins before you even know you're pregnant. Here's what happens early on.
Refine Your Search
Type
Gender
Age
- All
- 45 to 64 middle
- 19 to 44 younger
- 65 to 80 older
- 13 to 18 years teen
- 80 and over
- 06 to 12 years elementary/preteen
- 03 to 5 years preschool
- 00 birth to 01 month newborn
- 02 months to 2 years infant/toddler
- 29 to 40 middle
- 2 years
- 19 to 28 young adult