People who boost their vitamin D levels with supplements reduce their risk of respiratory tract infections, such as the flu, by up to 12%, according to a new sy

People who boost their vitamin D levels with supplements reduce their risk of respiratory tract infections, such as the flu, by up to 12%, according to a new systematic review and meta-analysis study of 25 randomized controlled trial (RCT) studies published in The BMJ. https://bcmj.org/news/vitamin-d-effective-reducing-flu-and-colds-study?inline=true https://bcmj.org/news/vitamin-d-effective-reducing-flu-and-c... Harvard Gazette: Study confirms vitamin D protects against colds and flu https://news.harvard.edu/gazette/story/2017/02/study-confirms-vitamin-d-protects-against-cold-and-flu/ https://news.harvard.edu/gazette/story/2017/02/study-confirm... WebMD: Vitamin D May Cut Risk of Flu https://www.webmd.com/cold-and-flu/news/20100616/vitamin-d-may-cut-risk-of-flu#1 https://www.webmd.com/cold-and-flu/news/20100616/vitamin-d-m... Vitamin D protects against colds and flu, finds major global study https://www.sciencedaily.com/releases/2017/02/170216110002.htm https://www.sciencedaily.com/releases/2017/02/170216110002.h...