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Behcet's disease
This rare disorder causes blood vessel inflammation throughout the body. Signs and symptoms depend on which parts of the body are affected.
Belching, gas and bloating: Tips for reducing them
Find out how you can lessen uncomfortable belching, gas and bloating.
Bile reflux
This digestive problem tends to develop in people who've had stomach surgery and sometimes contributes to gastroesophageal reflux disease (GERD).
Blastocystis hominis
This microscopic organism is a parasite that can live in your digestive system. Whether it causes digestive problems isn't clear.
Bone marrow transplant
Learn about this procedure that replaces unhealthy bone marrow with stem cells. Your own cells, donor cells or cells from umbilical cord blood may be used.
Botulism
This rare but serious condition can be caused by bacteria that have contaminated food or a wound. Learn more about how to prevent botulism.
C. difficile infection
Learn more about this diarrhea-causing infection that often occurs after antibiotic use. Many, but not all, people who get it are in health care facilities.
COVID-19 in babies and children
Know the symptoms of COVID-19 in children, what to do if your child appears sick and how to keep your family healthy.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Calcium and calcium supplements: Achieving the right balance
Considering calcium supplements? First figure out how much calcium you need. Then weigh the pros and cons of supplements.
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