Just read through an article examining why 18-20% of those who had COVID are experiencing the fog like, attention deficit like symptoms...
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Evidence from the SARS outbreak in 2002 and the MERS outbreak in 2012 suggest these infections caused roughly 15-20% of recovered people to experience depression, anxiety, memory difficulties and fatigue.
There’s no conclusive evidence the SARS-CoV-2 virus, which causes COVID, can penetrate the blood brain barrier, which usually protects the brain from large and dangerous blood-borne molecules entering from the bloodstream.
But there’s data suggesting it may “hitchhike” into the brain by way of nerves that connect our noses to our brains.
Researchers suspect this because in many infected adults, the genetic material of the virus was found in the part of the nose that initiates the process of smell — coinciding with the loss of smell experienced by people with COVID.
In a UK-based study released as a pre-print online in June, researchers compared brain images taken of people before and after exposure to COVID. They showed parts of the limbic system had decreased in size compared to people not infected. This could signal a future vulnerability to brain diseases and may play a role in the emergence of long-COVID symptoms.
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Evidence from the SARS outbreak in 2002 and the MERS outbreak in 2012 suggest these infections caused roughly 15-20% of recovered people to experience depression, anxiety, memory difficulties and fatigue.
There’s no conclusive evidence the SARS-CoV-2 virus, which causes COVID, can penetrate the blood brain barrier, which usually protects the brain from large and dangerous blood-borne molecules entering from the bloodstream.
But there’s data suggesting it may “hitchhike” into the brain by way of nerves that connect our noses to our brains.
Researchers suspect this because in many infected adults, the genetic material of the virus was found in the part of the nose that initiates the process of smell — coinciding with the loss of smell experienced by people with COVID.
How does COVID damage the brain?
These nasal sensory cells connect to an area of the brain known as the “limbic system”, which is involved in emotion, learning and memory.In a UK-based study released as a pre-print online in June, researchers compared brain images taken of people before and after exposure to COVID. They showed parts of the limbic system had decreased in size compared to people not infected. This could signal a future vulnerability to brain diseases and may play a role in the emergence of long-COVID symptoms.
