COVID linked to loss of brain tissue: but correlation doesn't prove causation

By Francois Balloux, Chair Professor, Computational Biology, UCL

Early in the pandemic, it became clear that COVID-19 wasn’t just a disease of the lungs. The heart, kidneys and liver could also be affected. Many patients also suffered from neurological problems, including “brain fog”, loss of a sense of smell and taste, and stroke. Now, a new study from the University of Oxford suggests that COVID can lead to long-term loss of brain tissue. This is a worrying find, which comes against the backdrop of numerous reports of long…

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