Why vitamin C won't 'boost' your immune system

To cash in on the global craze for boosting immunity, many people are selling fraudulent products promising to cure, treat or prevent viral infection. 

There is no evidence that the advertised zinc supplements or green teas have any kind of effect. It is important to be wary of the hype and fake news.

Nobel Prize winner Linus Pauling had some studies published which were claiming that large doses of Vitamin C can cure illnesses like cancer and heart disease, along with the flu, but so far the claims have been largely inaccurate, though a few studies reported a shorter duration of the illness in some people.