The consequences of Covid turned out to be comparable to traumatic brain injury - due to the disease, a person can lose up to six IQ points per year.
"This is about the so-called 'brain fog' - one of the long-term consequences of coronavirus infection. Patients complained of memory impairment, decreased concentration, sleep problems, depression, increased fatigue, apathy and other symptoms.
As experts have found, “brain fog” can take away up to six IQ points from a person in a year.
The deficits were primarily found in cognitive areas related to memory, spatial planning and verbal reasoning. Experts noted that a six-point drop in IQ has little impact on the daily life of an individual, but could be significant at a population level, given the scale of the pandemic.
It is easy to detect “brain fog” in a person if they suddenly find it difficult to choose the right words in a conversation and words that they used to use regularly start to “fly out of their head”.

