Organizer

1. 1.77 nmol response to 100 IU of Vitamin D (46 RCTs) – meta-analysis Sept 2023
2. 10 reasons for poor response to Vitamin D (race, binding protein, etc.) – Nov 2017
3. 200 IU needed to increase vitamin D levels by 1 ng (not 100 IU) – summary of 25 studies – Feb 2014
4. 2700 IU of vitamin D needed to get above 20 ng if dark-skinned and high latitude – Oct 2021
5. 30 percent of variation of vitamin D levels were associated with just 3 variables – March 2013
6. 4700 IU of vitamin D needed by most seniors – an equation -July 2014
7. 50,000 IU Vitamin D weekly was the most popular for Breast Cancer - May 2020
8. AI: Exciting opportunity for Vitamin D Researchers
9. Children 41X more likely to be vitamin D deficient if both parents were deficient – Dec 2018
10. D Minder: Vitamin D calculator for Smartphones and iPad
11. Estimate Vitamin D levels based on questionnaires (12 studies) – July 2020
12. Estrogen contraception pill doubled the response to 1,000 IU of vitamin D – RCT Sept 2017
13. Excellent prediction of very low vitamin D in elderly from just 16 questions (analyzed by ML) – June 2017
14. Excessive clothes and being indoors results in very low vitamin D levels – Nov 2011
15. Free Vitamin D evaluation service
16. Gene differences can result in 14 ng difference in vitamin D levels– Feb 2014
17. Genes account for less than 18 percent of variation in vitamin D levels – Jan 2013
18. Global analysis of disability - most are associated with vitamin D deficiency - Lancet Dec 2012
19. Higher air pollution associated with 7 ng lower vitamin D levels – Aug 2013
20. How to predict response to a vitamin D dose – RCT April 2014
21. How you might double your response to vitamin D
22. Increased Vitamin D response if take cofactors, etc
23. Increasing the ratio of mono to poly fats increased Vitamin D levels by 6 ng – RCT Aug 2011
24. Is a senior Vitamin D insufficient - a 2 minute questionnaire is 85 percent accurate – Nov 2019
25. Jordanian women vitamin D – 16 ng if Western clothing – 12 ng otherwise – Aug 2011
26. Less response to 800 IU of Vitamin D by Africans than natives in Finland – RCT March 2018
27. Low Vitamin D screening with just 5 questions (for less than 12 ng) – June 2022
28. Magnesium Deficiency Reduces Vitamin D Effectiveness- Sept 2011
29. Magnesium may not be as available if have low stomach acid (seniors)
30. Might be able to predict who will benefit from vitamin D by just 2 genes – July 2013
31. Model has 80 percent chance of predicting vitamin D levels to within 10 ng – Feb 2012
32. Molecular Approaches for Optimizing Vitamin D (one size does not fit all) – Carlberg Nov 2015
33. Monthly vitamin D dosing had higher response than 3 per month – RCT Jan 2018
34. Predictors of low vitamin D: race, age, and BMI (confirmed now by Machine Learning) – Feb 2024
35. Multiple Sclerosis patients need more vitamin D to get same blood level response – Aug 2015
36. Huge variation in response to vitamin D supplementation – personal vitamin D response index – Dec 2016
37. Vitamin D deficiency predicted with 91% accuracy ( AI, age, paywall) - April 2024
38. Autistics have half of the response to Vitamin D – RCT Oct 2018
39. Not all Vitamin D levels follow the season – Asthma, Rhinitis, … – March 2019
40. Obese need 2.5 IU of vitamin D per kg to increase 1 ng (about 3.4 X more) – RCT Sept 2013
41. Obese need 2X as much vitamin D to get the same response – June 2012
42. Obese need more Vitamin D: Volume dilution, IU per pound, or BMI – RCT Dec 2012
43. Reasons for low response to vitamin D
44. On-line Vitamin D response simulation – July 2021
45. Oral contraceptive use associated with higher levels of vitamin D – thesis June 2012
46. Overview Vitamin D Dose-Response
47. People with gut problems are low on vitamin D
48. Poor absorption of Vitamin D is strongly related to type of gut bacteria – Dec 2020
49. Poor CYP2R1 gene reduces blood response to Vitamin D supplementation – Aug 2019
50. Poor response to vitamin D supplementation if poor level of B Vitamins (rats in this case) March 2021

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