Men's sexual health
Learning Center
Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.
Active surveillance for prostate cancer
Learn about why doctors may recommend active surveillance for prostate cancer and what to expect.
Air travel with infant: Is it safe?
Planning for air travel with an infant? Know how air travel can affect a newborn's ears and breathing, and what you can do to keep your baby comfortable.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
Alternative cancer treatments: 11 options to consider
Alternative cancer treatments may help you cope with cancer treatment side effects such as fatigue, pain, sleep problems, and nausea and vomiting.
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.
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Arteriovenous malformation
In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Astigmatism
Imperfect curvature of your eye can cause blurred distance and near vision. Learn about this common and treatable eye condition.
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