Research led by Queen Mary University of London has shown that
vitamin D supplementation can lower the risk of acute respiratory
tract infection, including fl u and the common cold.
The study involved 11 000 participants from 14 countries including
the UK, USA, Japan, India, Afghanistan, Belgium, Italy, Australia and
Canada. Results showed that those who were particularly vitamin
D-defi cient benefi ted the most from supplementation.
Vitamin D is believed to protect against respiratory infections by
boosting levels of antimicrobial peptides (natural antibiotic-like
substances) in the lungs. The study supported fi ndings that people
have lower vitamin D levels in the winter and spring – due to less
sunshine. (Vitamin D is manufactured by the body when the skin is
exposed to sunshine.)

Infographic by: www.vitamindwiki.com
Vitamin D protects against colds and flu

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