26 health factors increase the risk of COVID-19 – all are proxies for low vitamin D
The CDC in Dec 2020 detailed those health factors which increased COVID-19 risks
Update May 13, 2021 [Today, more than 400 different chronic immunodeficiencies caused by genetic variations have been identified, according to the Immune Deficiency Foundation.] Video review May 2021 by Dr. Campbell
See related: Risk factors for severe COVID in children are all related to low vitamin D (same as adults) - April 2022
| Sometimes | A health problem will cause a Vitamin D deficiency |
| Sometimes | A Vitamin D deficiency will cause another health problem |
| Always | Stop a vitamin D deficiency to avoid getting additional health problems |
Many COVID-19 risks are associated with low vitamin D (7 studies) – Systematic Review Jan 2021
Health Problems and D on the left of every VitaminDWiki page
#F00:27health problems proven by RCT to be fought by 50,000 IU every 2 weeks#F00:18health problems proven by RCT to be fought by 50,000 IU every weekMany drugs increase ACE2 and COVID-19 (176 page review) - Dec 2020
Periodontitis reduced by Vitamin D - many studies
- 8.8X more likely to die of COVID-19 if have peridontitis

COVID-19 treated by Vitamin D - studies, reports, videos
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