Infant health
Learning Center
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Bladder outlet obstruction: Causes in men?
Find out more about the causes of male bladder outlet obstruction and possible next steps.
Blocked tear duct
Watery, irritated eyes may occur when your tears can't drain normally. Learn about this common eye condition that affects newborns and sometimes, adults.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Blood in semen
This symptom can be scary, but the cause is most often not cancer. Find out possible causes and when to see a doctor.
Breastfeeding and alcohol: Is it OK to drink?
Breastfeeding and alcohol don't mix well. A Mayo Clinic specialist discusses how alcohol affects breast milk.
Breastfeeding positions
Breastfeeding can be awkward at first. Experiment with various positions until you feel comfortable.
Breastfeeding strike: Why do babies refuse to nurse?
Understand why babies sometimes refuse to breastfeed and what you can do about it.
Broken collarbone
This common injury is usually the result of falling, playing sports or being in a traffic accident.
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