exposure to common infections is linked to memory and brain function - even if the infections never made you ill, a new research has warned.
Researchers found an index of antibody levels caused by exposure to Chlamydia pneumoniae, Helicobacter pylori, cytomegalovirus, and herpes simplex viruses 1 and 2 was associated with worse cognitive performance, including memory, speed of mental processing, abstract thinking, planning and reasoning ability.
"We were very interested in what were the risk factors for cognitive performance and decline," said Clinton Wright, the study's lead researcher and scientific director of the Evelyn F McKnight Brain Institute at the University of Miami.
Earlier studies have already linked certain infections to an increased risk of stroke and Alzheimer's disease.
Researchers investigated if evidence of past exposure to these infections contributed to performance on tests of memory, thinking speed and other brain functions.
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