Even mild cases of COVID-19 can lead to brain loss, according to a study of 782 volunteers. Among those who have had COVID-19, scientists have noticed loss of gray matter in areas of the brain related to smell and taste.
The study was conducted by the British Biobank – an organization that collects long-term data on British illnesses.
Even before the pandemic, brain scans were performed in 40. survey participants as part of standard Biobank activities. In 2021, from this group, scientists invited 394 COVID-19 survivors to another study. Most of these people had only mild, moderate or no symptoms, 15 were hospitalized. Among people who have had COVID-19, scientists have noticed significant losses of gray matter in areas of the brain related to smell and taste. Certain altered areas of the brain are also involved in the memory of emotional responses. The changes were not seen in the group of 388 people who were not infected with the coronavirus.
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The authors of the study concluded that Further observation is needed to determine if the problems with smell, taste, and memory of emotional events will last longer.
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The British Biobank is an organization that supports scientists around the world that conducts medical research on a group of volunteers. In 2006, half a million Britons aged 40-69 years were enrolled in a long-term study who examined their basic health parameters. Since then, these people, while maintaining anonymity, have participated in various studies. The Biobank database, systematically updated with new data, is available all over the world for scientists conducting research on the most common and life-threatening diseases.
See also:
- Could COVID-19 Lead to Alzheimer’s? New study
- Why smell and taste are lost when COVID-19 is contracted. How to regain your senses?
- Long COVID-19. Why do some people recover for months?
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