Newborn health
Learning Center
Amniocentesis
Find out about this prenatal test that checks the fluid surrounding the baby during pregnancy.
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
Ambiguous genitalia
Learn about causes and treatment of ambiguous genitalia, a rare disorder of sex development in which a baby's external genitals are not clearly male or female.
Alzheimer's genes: Are you at risk?
What role do genes play in developing Alzheimer's? Are you at risk?
Allergy medications and pregnancy: What's safe?
Find out what medicines can help you manage allergies while you're pregnant.
Alcohol: Does it affect blood pressure?
Drinking too much alcohol can raise blood pressure to unhealthy levels.
Air travel during pregnancy: Is it safe?
Consider these guidelines if you need to fly while you're pregnant.
Aging: What to expect
Understand the natural changes that come with aging.
Adenomyosis
Displaced endometrial tissue from adenomyosis can cause an enlarged uterus and painful, heavy periods.
Abdominal hysterectomy
Learn why surgery to remove the uterus, known as a hysterectomy, might be done and what to expect if you need this surgery.
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