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 VitaminDWiki

• Vitamin D dose for 140 lb woman - Sept 2015

• Vitamin D Cofactors in a nutshell

• Overview Toxicity of vitamin D

• Too much Vitamin D

• 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

• Populations with more than 50 ng of vitamin D

• 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: