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Two years after having Covid-19, diagnoses of brain fog, dementia and epilepsy are more common than after having other respiratory infections, a study by the University of Oxford suggests. But anxiety and depression are no more likely in adults or children two years on, researchers found. More research is needed to understand how and why Covid could lead to other conditions. Experts say the virus disrupted daily life as well as making people ill. Previous research has suggested that adults are at an increased risk of brain and mental health conditions in the six months after a Covid infection. This study looked at the risks of 14 different disorders in 1.25 million patients two years on from having Covid, mostly in the US. It then compared them with a closely-matched group of 1.25 million people who had a different respiratory infection. Dr. Max Taquet is the study's lead author and senior research fellow at Oxford Health Biomedical Research Centre. He described his findings as a mixture of good and bad news. Photo shows: An older woman with her hand to her head. Credit: Getty Images