KENNESAW, Ga., May 29 -- Kennesaw State University issued the following news release:

Previous research has linked overnight-shift work to conditions such as hypertension, diabetes, and poor sleep quality. Surprisingly, Fata said her study found no significant link between shift work and cognitive decline.

"Based only on our dataset, we found that night-shift work did not lead to cognitive decline," Fata said. "It was surprising because many studies show that night-shift workers experience disruptions to their circadian rhythms and other health issues that are known to contribute to cognitive decline."

A senior at the Norman J. Radow College of Humanities and Social Sciences, Fata said her interest in the topic was personal.

"My grandmo...