Dental care
Learning Center
Atypical cells: Are they cancer?
Atypical cells appear abnormal, but they aren't necessarily cancerous.
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.
Bacterial vs. viral infections: How do they differ?
Understand the differences between bacterial and viral infections.
Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Barium enema
Find out how to prepare and what to expect if your doctor has recommended a barium enema.
Basal cell carcinoma
Learn about symptoms, treatment and prevention of this common skin cancer that often occurs on the head and neck.
Bedsores (pressure ulcers)
These areas of damaged skin and tissue are caused by sustained pressure — often from a bed or wheelchair — that reduces blood flow to vulnerable areas of the body.
Belly fat in women: Taking — and keeping — it off
Belly fat is more common after menopause. Find out why and learn how to keep it off.
Benign prostatic hyperplasia (BPH)
This common problem, also known as an enlarged prostate, can be treated.
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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