Fertility
Learning Center
Trichotillomania (hair-pulling disorder)
In this mental health condition, people can't resist urges to pull out hair from their body. They do this often. Therapy may help reduce or stop urges.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Ovulation signs: When is conception most likely?
Trying to get pregnant? Learn about ovulation signs and symptoms.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Keratoconus
When your cornea bulges outward, it can cause blurry vision and make your eyes sensitive to light. Find out about symptoms, causes and treatment for this eye condition.
How to get pregnant
Looking for tips on how to get pregnant? Here's help understanding how to maximize your fertility and when to talk to a doctor.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Fertility preservation: Understand your options before cancer treatment
Know what you can do to preserve your fertility before cancer treatment.
Female fertility: Why lifestyle choices count
Know what you can do to protect being able to get pregnant.
Elective abortion: Does it affect subsequent pregnancies?
Understand if an elective abortion can affect your fertility or future pregnancies.