HOW: spend time outside or take Vit-D supplements orally. Daily maintenance of vitamin d is recommended in order to have the optimal protective/preventative effects.

There is mounting clinical evidence showing that Vitamin D prevents the cytokine storm and much of what we already know about this vitamin’s role in our immune system today doesn’t surprise experts.

This video is a great summary of how Vitamin D prevents cytokine storms which is known to be caused by COVID19: https://www.youtube.com/watch?v=zd_oGkGJr04

Reference:
Covid-19: Emerging Evidence Suggests Role for Vitamin D in Coronavirus Severity
https://www.physiciansweekly.com/covid-19-emerging-evidence-suggests-role-for-vitamin-d-in-coronavirus-severity/

Is a “Cytokine Storm” Relevant to COVID-19?
https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2767939#:~:text=A%20critical%20evaluation%20of%20the,chemokines%2C%20and%20several%20other%20mediators.

NIH Study: “Vit D has been widely implicated in enhancing the immune response and suppressing the cytokine storm. It’s deficiency has been linked to increased susceptibility to viral infections”. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7266578/
How: spend 20 minutes under sunlight each day, or take vitamin D orally. Specifically, it is important to consistently regulate your vitamin D levels (sunlight daily