The Walter Reed Army Medical Center is famous for treating both presidents and soldiers. But the institution is also a longtime leader in the fight to develop vaccines, including one against malaria — something many thought wasn't possible. That vaccine is currently in a large-scale human trial in Africa.

The slow, shuffling walk of old age may be caused by invisible problems with tiny blood vessels in the brain. One-third of people who tested normal during life were found to have these tiny abnormalities in blood vessels at autopsy.

The new Walter Reed National Military Medical Center, on the grounds of the Navy's campus in Bethesda, Md., combines two flagship military hospitals in an effort to improve patient care. Combining two institutions with their own long — and separate — cultures and history won't be easy.

The new Walter Reed National Military Medical Center, on the grounds of the Navy's campus in Bethesda, Md., combines two flagship military hospitals in an effort to improve patient care. Combining two institutions with their own long — and separate — cultures and history won't be easy.

People exposed to the cloud of contaminants that engulfed Lower Manhattan after the Sept. 11 attacks were less likely to die than people who weren't exposed, according to a new study. But other research found a small boost in cancer rates among first responders, as well as elevated depression and PTSD.

The company's website linked to pages about several drugs without mentioning any of the risks they pose in the promotional text, FDA said. Pfizer said it has removed the "cited content" and is working on a response to the agency.

In Miss., church attendees share meals that include lots of mac and cheese, pork chops and fried food. But Miss. has the highest obesity rate in the U.S. Local Rev. Michael Minor is spreading the gospel of healthy eating, and The National Baptist Convention has asked him to create health and wellness plans to influence other churches. He speaks with host Michel Martin.