Researchers tapped into a wide-ranging health survey to rate vision in the population in the early 1970s and roughly 30 years later. They compared eyesight information for more than 4,400 people tested in 1971 and 1972 with data from another set of 8,300 people tested from 1999 to 2004.

Neurology researchers have shown that feeding amino acids to brain-injured mice restores their cognitive abilities and may set the stage for the first effective treatment for cognitive impairments ...

A new study on the surface chemistry of silver-colored, mercury-based dental fillings suggests that the surface forms of mercury may be less toxic than previously ...

A new study shows that people who have been infected with West Nile virus may have persistent virus in their kidneys for years after initial infection, potentially leading to kidney ...

Individuals taking a medication to treat depression may experience changes in their personality separate from the alleviation of depressive symptoms, according to a new ...