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The world is now in the state of contingency and is facing one common enemy, COVID 19. Front developed countries to the developing and under developed countries, all are fighting against this common enemy which is a virus that is 0.125 microns ( 1 25 nm) with the size ranging from 0.06 to 0.14 microns. The world is now looking for a vaccine to prevent the infection, while the need of the hour is to boost the immunity of individuals against the disease through readily available nutrients. With the increase in incidence of the COVID-19 pandemic, scientists to common public have started to ponder the ways out of it, while boosting the immunity has become the only resolve as no vaccine has been invented until date. It is obvious that there is a correlation between nutrition and immune system; it is a common understanding that people who are well-nourished have a better immunity compared to poorly nourished people with a weak immunity. It is to be noted that people suffering from chronic diseases and elderly will have a weak immunity and are more prone to any disease let alone COVID-19. Though general immunity can be boosted through vitamin C, zinc and other micronutrients, vitamin D is required to boost overall immunity and also strengthen lungs. This review aims at laying emphasis on the need of vitamin D in strengthening immunity against the deadly common enemy COVlD- 19.
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