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The virus that causes cold sores may affect your thinking and memory abilities.

A new study published in the journal Neurology finds people who have higher levels of infection in their blood were more likely to score poorly on memory and thinking tests.

In the study, researchers looked for five common infections in blood samples. Those with the highest infection levels scored the worst and the risk was more common in women, people with low levels of education and those who did not exercise.

Related links:

Neurology journal website

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