Long COVID: brain function still affected for some up to two years after infection – new research
These symptoms are often referred to as “brain fog”, and are especially common among people who have long-term or persistent symptoms called long COVID.
- These symptoms are often referred to as “brain fog”, and are especially common among people who have long-term or persistent symptoms called long COVID.
- COVID infection generally has been linked to an increased risk of being diagnosed with dementia.
- We found people with persistent symptoms fared worse in these tests up to two years after a COVID infection.
Brain training
- Another 2,400 completed the second round, of whom 1,700 had also participated in the first round.
- The tasks aimed to cover a range of elements of brain function, including visual memory, attention, verbal reasoning and motor control.
- Read more:
How COVID can disturb your sleep and dreams – and what could help
What we found
- Digging deeper, we saw that the effect of COVID on test performance was biggest for people with a longer symptom duration of more than three months.
- These people meet the criteria for having long COVID.
- By also testing how other factors affected test scores, we were able to put into context how big an impact COVID had.
- For example, we saw that older people and people experiencing psychological distress scored lower in the tests.
Limitations and where to next
- It’s important to note some limitations in our study.
- We don’t have test results for people before their COVID infection, which limited our analysis to comparing results across different groups.