Vitamin D more than 40 ng: 1300 IU 50% chance: 5,000 IU 80% chance
[Grassrootshealth.org]
Goal = 40 nanogram/ml
| Daily | Response >40 ng | How often to take 50,000 IU capsule |
| 1,300 IU | 50% | too long |
| 5,000 IU | 83% | once every 10 days |
| 10,000 IU | 96% | once every 5 days |
See also Vitamin D Life
Overview Loading of vitamin D get a good Vitamin D level in days, not months
Vitamin D differences of 5 ng are meaningless - Aug 2015 - due to test inaccuracy, lack of consistency
88 percent of South Australians have less than 40 ng of vitamin D – Sept 2015
Pure North (Calgary) improves health by raising vitamin D to 60 ng
Best Vitamin D- 40 to 52 ng, achieved with 4000 – 6000 IU daily – Heaney Oct 2014 - averages
How to predict response to a vitamin D dose – RCT April 2014
Toward predicting vitamin D levels without a blood test.
- Can improve estimate of how much is needed if adjust for body weight, age, health condition, etc
4700 IU of vitamin D needed by most seniors – an equation -July 2014
Note - the chart on this page IS NOT the results of a Randomized Controlled Trial
It represents the past 6 months of people taking a constant dose
They could have previously increased or decreased their dose to get to desired goale: