According to experts, COVID-19 is more than a respiratory illness; it has more ominous and pervasive effects on the human body because it may affect the brain, accelerating or causing neurodegenerative diseases like Parkinson′s and Alzheimer′s. Dr. Yatish Agarwal, a senior professor at Vardhman Mahavir Medical College and Safdarjung Hospital in New Delhi, described the pandemic as "a beast with a thousand heads" and said that its effects go beyond the nose, throat, and lungs.

Numerous clinical investigations have shown that neurological problems affect 36–84% of COVID-19 patients. He stated in an exclusive essay for Manorama Yearbook 2023 that it is strange that neurologic symptoms were seen in people younger than 50 years old who were healthy before the infection. Additionally, another article revealed that the virus can even inflict direct brain damage by piercing the blood-brain barrier. It can cause brain hemorrhage or stroke by raising blood pressure in blood vessels and interfering with the body′s clotting system.

Dr. Agarwal, who is also the Dean of the University School of Medicine and Paramedical Health Sciences at Guru Gobind Singh Indraprastha University, added that while some of these symptoms are acute and pass quickly, others are long-lasting and can make a patient′s life miserable. He added that there is now enough solid evidence to suggest that it may be a good idea to keep an eye out for COVID′s potential long-term cognitive effects. 

(Source: https://health.economictimes.indiatimes.com/news/diagnostics/covid-19-may-affect-brain-trigger-neurological-problems-doctor/97737512 )