Optimal dose of vitamin-D supplement reduces death risk in covid patients - A review

An impasse in the realm of public health has been undergoing since December due to outbreak of COVID-19. As a consequence of this impasse, different countries are tumbling into an even deeper recession. The life of economically backward people came to a grinding halt on account of the recurrent lockdown. To bear the cost for the treatment of COVID-19 is nearly to impossible for them. It is well known fact that the best preventive measure against COVID-19 should be vitamin-D supplementation for those who are vitamin-D insufficient or deficient. Nearly 1 billion people worldwide have low level of vitamin-D. We know vitamin-D plays a vital role to the function of immune system and vitamin-D supplements have previously been proven safe and effective to reduce the risk of viral respiratory tract infection. Recently, some study have shown a strong relation between severe vitamin-D deficiency and death rate in COVID-19. It has been recorded that patients with lower level of vitamin-D had higher risk of death than patients having no deficiency in vitamin-D. Mortality rate is quite high in 20 European countries and in USA because the people of this countries are vitamin-D deficient. Thus, vitamin-D supplementation can be a very good preventive treatment against COVID-19.