{"podcast":{"title":"Dr. John Campbell","slug":"dr-john-campbell-7851784","podcast_index_feed_id":7851784,"rss_url":"https://feeds.megaphone.fm/VG9554039150","website_url":null,"image_url":"https://megaphone.imgix.net/podcasts/7a133470-32e4-11f1-ae26-ef5a830a5f06/image/aacd596ff9b51467520b0238cfcd1c87.png?ixlib=rails-4.3.1&max-w=3000&max-h=3000&fit=crop&auto=format,compress","author":"Campbellteaching","episode_count":480,"summary":"Hello Everyone, My name is John Campbell and I am a retired Nurse Teacher and former clinical nurse based in England. I also do some teaching in Asia and Africa when time permits. These videos are to help students to learn the background to all forms of health care. My PhD focused on the development of open learning resources for nurses nationally and internationally. LinkedIn profile, https://www.linkedin.com/in/dr-john-campbell-5256223b/ Twitter, https://twitter.com/Johnincarlisle Disclaimer; These media including videos, book, e book, articles, podcasts are not peer-reviewed. They should never replace individual clinical judgement from your own health care provider. No media-based material on this channel is suitable for using as professional medical advice. All comments are also for educational purposed only and must never replace advice from your own health care provider","last_synced_at":"2026-07-23T10:19:57.883522+00:00","page_url":"https://stenobird.com/podcast/dr-john-campbell-7851784"},"episode":{"title":"Vitamin D, government inaction","slug":"vitamin-d-government-inaction","published_at":"2026-07-22T12:30:00+00:00","page_url":"https://stenobird.com/podcast/dr-john-campbell-7851784/vitamin-d-government-inaction","show_page_url":"https://stenobird.com/podcast/dr-john-campbell-7851784","url":"https://traffic.megaphone.fm/VG3915164262.mp3","audio_url":"https://traffic.megaphone.fm/VG3915164262.mp3","summary":"COVID-19 Mortality Risk Correlates Inversely with Vitamin D3 Status, a Mortality Rate Close to Zero Could Theoretically Be Achieved at 50 ng/mL 25(OH)D3: (125 nmol/L) Results of a Systematic Review and Meta-Analysis https://www.mdpi.com/2072-6643/13/10/3596 Blood calcifediol (25(OH)D3) levels correlate strongly with SARS-CoV-2 infection severity Cause or effect? Strength of our immune system, More or less neglected by the responsible authorities Nutrition, physical fitness, recreation, sleep Widespread vitamin D deficiency Data collected March 2021 Methods Systematic literature search Retrospective cohort studies (1) Clinical studies (7) on COVID-19 mortality rates versus D3 blood levels Reported D3 blood levels pre-infection or on the day of hospital admission Mortality rates, corrected for age, sex, and diabetes Results Negative Pearson correlation of D3 levels and mortality risk r = −0.4154, p = 0.0770 r = −0.4886, p = 0.0646 Combined data Median D3 levels were 23.2 ng/mL (58 nmol/L) Pearson correlation = −0.3989, p = 0.0194 Regression suggested a theoretical point of zero mortality at approximately 50 ng/mL (125 nmol/L) D3 Conclusions The datasets provide strong evidence that low D3 is a predictor rather than just a side effect of the infection. Despite ongoing vaccinations, we recommend raising serum 25(OH)D levels to above 50 ng/mL Learn more about your ad choices. Visit megaphone.fm/adchoices","meta_description":"COVID-19 Mortality Risk Correlates Inversely with Vitamin D3 Status, a Mortality Rate Close to Zero Could Theoretically Be Achieved at 50 ng/mL 25(OH)D3:…","key_points":[],"chapters":[],"topics":[],"duration_seconds":862,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/dr-john-campbell-7851784/episodes/vitamin-d-government-inaction/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/dr-john-campbell-7851784/vitamin-d-government-inaction.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}