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<p class="wp-block-paragraph">Vitamin D is the go-to vitamin for keeping our bodies healthy and our immunity high.</p>



<p class="wp-block-paragraph">Among all vitamins that help the body fight off infections, vitamin D is the most important vitamin to take. If you know you&#8217;re prone to seasonal allergies or catching the flu, then taking vitamin D all-year-around might be a good choice.</p>



<p class="wp-block-paragraph"><strong>Studies</strong></p>



<p class="wp-block-paragraph">In a <a href="https://www.nature.com/articles/s41598-022-22045-y">study</a> by Mikhail V. Bychinin &; Co. published in &#8216;Scientific Reports&#8217; journal in November 2022, patients with Covid-19 in a hospital setting were split into two groups. One group received a weekly dose of 60.000 IU of vitamin D3, followed by a daily dose of 5000 IU, while the second group received placebo pills.</p>



<p class="wp-block-paragraph">After a week, patients who got the highest number of vitamin D3 showed higher levels of NK and NKT cell counts (NK=natural killer cells, NKT=natural killer T cells), reduced inflammation in the body and faster recovery from Covid-19, while those in the placebo group took longer to recover. The study concluded that vitamin D has an important role in immunity during infection with the novel coronavirus. </p>



<p class="wp-block-paragraph">It was proven that it simulates the production of antimicrobial and antiviral peptides that fight off the infection and restores the body&#8217;s healthy state in a short amount of time.</p>



<p class="wp-block-paragraph">Another <a href="https://www.health.harvard.edu/cancer/vitamin-d-supplements-may-reduce-risk-of-invasive-cancer">study</a> shows that vitamin D reduces the risk of mortality in cancer patients. Harvard scientists gave 2000 IU of vitamin D daily to 25,871 people who were 50 or older. The group was split into participants who took vitamin D and those who took placebo pills. The results showed that the rate of fatal cancer was lower by 17% in the group who took vitamin D daily. </p>



<h3 class="wp-block-heading">Conclusion</h3>



<p class="wp-block-paragraph">Vitamin D is a powerful immune booster that helps you recover faster from a respiratory illness or other types of infection. You can&#8217;t get enough vitamin D from foods so you&#8217;d need to take supplements. Don&#8217;t forget to go for at least 2000 IU a day especially if you suffer from a cold and you feel extra tired.</p>



<p class="wp-block-paragraph"><strong>Author&#8217;s Bio</strong></p>



<p class="wp-block-paragraph">Marlena Bontas is a freelance writer with a passion for health, technology and mental wellness. She has an MA in Psychology from the University of Helsinki and is currently travelling. Write her on Twitter at <a href="https://twitter.com/MarlenaEeva">@MarlenaEeva</a>.</p>

The role of vitamin D in immunity
