Doctors in Canada are puzzled over a cluster of people coming down with a dementia-like brain disorder with no known diagnosis. Over the past half-decade, dozens of residents in New Brunswick are thought to have developed the condition, which includes symptoms such as memory loss, behavioral...

New research is the latest to find evidence of a link between mental illness and infections caused by a group of bacteria commonly found in cats and other animals. The small study found that people with diagnosed schizophrenia and schizoaffective disorder were more likely to carry Bartonella...

People’s love of processed meat might come back to bite them in the long run, new research from the UK suggests. The study found a link between greater consumption of processed meat and higher rates of Alzheimer’s disease and other forms of dementia. At the same time, it also found a possible...