US
Institute of Medicine
Endocrine Society, Vitamin D Council
American Academy of Pediatrics (AAP)
American Academy of Dev. Medicine and Dentistry
Europe
Scientific Advisory Committee on Nutrition (UK)
European Food Safety Authority
Central Europe consensus
Italian Endocrinologists, Italian Consensus
Nutrition - French Society of Paediatrics
European Society for Paediatric Gastroenterology ....
European Society for Clinical and Economic Aspects of Osteo...
The Nordic Council of Ministers
Health Council of the Netherlands
Most of the groups around the world say that 4,000 IU can be taken
without checking with a doctor or having a vitamin D test
A few groups did not specify an upper limit for adults
Global Vitamin D recommendations - summer 2018 = Source of the data for the chart
Additional organizations which have also stated that 4,000 IU is OK
- 15) 30 to 50 ng of vitamin D is optimal – Central Europe consensus Sept 2013
- 16) 50,000 IU of vitamin D every two weeks – Jordan conclusion - RCT July 2017
- 17)Vitamin D recommendations by Italian Endocrinologists – 40 ng if pregnant, 30 ng if high risk – April 2018
- 18) Vitamin D consensus for Italian children, 30 ng needed, up to 4,000 IU if over age 10 – May 2018
- 19) Multiple Sclerosis Society of Canada Nov 2018
See also Vitamin D Life
- 4,000 IU of Vitamin D - many pages
- Need 40 to 60 ng of Vitamin D – 48 scientists call for action – 2015
- Seniors need at least 4,000 IU vitamin D, no test needed – Consensus Jan 2014 - included in the chart above
- Overview How Much vitamin D
- 7100 IU (50000 weekly) got most women to 30 ng of vitamin D - Aug 2012
- Vitamin D - at least 4,000 IU to achieve 40-60 ng and reduce risk of early death – Holick June 2018
- US admits math mistake was made in 2010 in estimating Vitamin D, but will not change recommendations – Nov 2017
- Using their old data: 3,000 IU get 97.5% of the population to 30 ng
- 4,000 IU of Vitamin D daily is safe, but takes a year to plateau (Best-D) – RCT Dec 2016
- Vitamin D levels have been crashing since 1995 (Polish Children, Elite Military, etc)
Non-daily
- Take vitamin D3 daily, weekly, or bi-weekly
- One pill every two weeks gives you all the vitamin D most adults need
- 50,000 IU every two weeks is ~3,700 IU daily average
Some countries unfortunately allow only a maximum of 1,000 IU capsules to be sold
Canada, Germany, New Zealand, etc.
short UTL = is.gd/Vitd4000