The effective functioning of the immune system requires adequate intake of vitamins and trace elements. For a long time, whether vitamin C can help prevent and treat the common cold has been controversial. In fact, the accumulation of vitamin C in phagocytes (such as neutrophils) can indeed enhance chemotaxis, phagocytosis, the production of reactive oxygen species, and ultimately kill microorganisms. Therefore, vitamin C deficiency will lead to reduced resistance to pathogens, and higher intake will enhance the function of the immune system. In the prevention and treatment of the new crown (COVID-19), it was found that the use of vitamin C can shorten the stay time of critically ill patients in the ICU by 8%, and significantly reduce the mortality rate of critically ill patients. Therefore, vitamin C is one of the best immune supplements in terms of enhancing immunity and preventing diseases.
