Hepatitis, a disease characterized by inflammation of the liver, affects millions of Americans. There are three common forms:

Pierre Noel, M.D., has been named medical director of Mayo Clinic’s newly formed Center for Military Medicine. This center will coordinate all military-related practice, education and research programs across Mayo Clinic, as well as collaborations and issues within Mayo Clinic. The center also will provide a central point of contact for the U.S. Department of Defense and other federal agencies.

Results of a phase I study in women showed that the treatment was safe and reduced tumors.

April is Esophageal Cancer Awareness Month, which makes it a good time to learn more about esophageal cancer, the sixth most common cause of cancer deaths worldwide. Signs and symptoms of esophageal cancer include difficulty swallowing, unexplained weight loss, coughing and hoarseness.

Nearly a third of patients responding to a Mayo Clinic survey said they used none of the opioids they were prescribed after surgery. The research findings, presented Thursday, April 19 at the American Surgical Association annual meeting, also show that only about 8 percent of patients disposed of their remaining opioids.

Caffeine is well-known for its ability to help people stay alert, but a team of researchers at MIT and Brigham and Women’s Hospital has now come up with a novel use for this chemical stimulant - catalyzing the formation of polymer materials.