Nutrition basics
Learning Center
BRCA gene test for breast and ovarian cancer risk
Find out what to expect if you're considering a blood test to determine if you have an increased risk of breast cancer. Learn what your results might mean.
Baby teeth: When do children start losing them?
Losing baby teeth is a big childhood event. Find out what to expect.
Barium enema
Find out how to prepare and what to expect if your doctor has recommended a barium enema.
Bed-wetting
Learn about causes and treatments of bed-wetting, including moisture alarms, bladder training and medicines.
Bee sting
Learn more about symptoms, treatment, self-care tips and prevention of bee stings, which in some people cause severe allergic reaction.
Belly fat in men: Why weight loss matters
Belly fat can be dangerous. Understand why and how to get rid of it.
Benign peripheral nerve tumor
Learn more about the different types of tumors that grow on or around the nerves that link to the brain and spinal cord.
Benign prostatic hyperplasia (BPH)
This common problem, also known as an enlarged prostate, can be treated.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Bicuspid aortic valve
This condition, present at birth, affects the valve between the lower left heart chamber and the body's main artery. Know the symptoms and treatment.
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