"What's good for the heart is good for the brain," one neuroscientist says. In addition to physical exercise, researchers say that mental exercise, socializing and a good diet can also help preserve memory in older brains.
Research into why some people have strong memory well into old age suggests that their brains are different from their peers. Some parts of the brains of "superagers" responsible for attention, thinking and memory seem to be spared the typical age-related shrinkage.
Health officials in China say they've confirmed 11 new bird flu diagnoses, bringing the number of H7N9 infections to 60, according to the official Xinhua news agency. The virus, which began in eastern China, has now sickened at least one person in Beijing, and two in the central province of Henan.
"The top priority is diagnosis — the capability to be able to pick up this virus, should it emerge outside of China," says virologist John McCauley. Flu researchers are getting started on creating a vaccine, but there are still many unknowns.
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