Vitamin D can protect against colds, flu: study claims

/ Feb 16, 2017

Vitamin D can protect against colds, flu: study claims

Taking extra vitamin D can protect against colds, flu and other respiratory infections, says a study that has reopened a debate on the usefulness of over-the-counter supplements. A review of 25 clinical trials in 14 countries, some with conflicting results, yielded “the first definitive ...