Vitamin D dose for 140 lb woman

[www.GrassrootsHealth.net]

Starting at 20 nanogram

1500 IU 50% chance of exceeding 40 nanogram

7400 IU 90% change of exceeding 40 nanogram

Note this chart never recommends more than 10,000 IU

📄Download the PDF from VitaminDWiki

See also VitaminDWiki

• One pill every two weeks gives you all the vitamin D most adults need (3600 IU daily average)

• Reasons for low response to vitamin D

• Obese need 2.5 IU of vitamin D per kg to increase 1 ng (about 3.4 X more) – RCT Sept 2013

  • Thus an overweight woman will need about 3.4X lager dose size
  • Example: 5,000 IU ==> 17,000 IU
• Vitamin D level can be high, but little benefit: due to kidney, genes, low Magnesium etc.
  • ~20% of people who get the desired nanogram level will still not get enough Vitamin D to thier cells
• 3X variation in response to dose of vitamin D – meta-analysis June 2012
  • Wide variation in response to the identical dose
• Vitamin D more than 40 ng: 1300 IU 50% chance: 5,000 IU 80% chance - Aug 2014
  • Also from GrassrootsHealth

• Vitamin D Cofactors in a nutshell

• Too much Vitamin D can be a problem if taken for long time without cofactors

• 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

• Getting Vitamin D into your blood and cells

  • Not limited to just Vitamin D pills
• Overview Vitamin D Dose-Response which has the following chart
  • Summary of 8 studies - need 1800 IU for 50% chance of exceeding 40 nanogram