Jul 2023 | King’s College London | The Lancet

British study: Long COVID could affect brain function for over two years

Researchers at King's College London spent two years investigating how an infection with the SARS-CoV-2 virus affects the cognitive performance of patients. Towards this end, the researchers compared people with and without an infection that had been overcome. To measure cognitive performance, the participants took two online tests, one in 2021 (3,335 participants) and one in 2022 (1,768 participants who had also taken the first online test). Among other things, their memory performance, attention and ability to concentrate were measured.  

The results, which have now been published in the specialist journal e-ClinicalMedicine (part of The Lancet Discovery Science), show that people who contracted COVID-19 and made a full recovery had no measurable cognitive impairment two years later. A different picture emerged in patients who were still reporting complaints 12 weeks after the acute SARS-CoV-2 infection or whose complaints were particularly severe: Cognitive deficits following a SARS-CoV-2 infection were still detectable almost two years after the infection. 

The Lancet

King’s College London

King's College London is a member of the Association of Commonwealth Universities and the Russell Group, an association of the UK's most research-intensive universities. The humanities, law, social sciences and human science faculties are particularly highly respected internationally. The King's College Hospital (university hospital) is connected to the university. Clinical studies and patient care are carried out at King's College Hospital. 

The Lancet

The Lancet is one of the oldest and most prestigious peer-reviewed medical journals in the world. The peer review process is the most common procedure for checking the quality of articles before they are published in scientific journals. The articles are reviewed by independent experts in the field.