Canadian Vitamin D recommendations not updated in 13 years
Canada
700+ studies since 2009 have found that much more vitamin D is needed
More than 700 Intervention Trials in VitaminDWiki since the IoM decision
Intervention - Vitamin D by date
Sample of studies in VitaminDWiki
Third study found that Infants needed 1600 IU of vitamin D – JAMA RCT May 2013
- Yet Canada still says that 400 IU is enough for virtually everyone
2400 IU of vitamin D needed to get most Northern adults above 20 ng – June 2020
10,000 IU of Vitamin D for 7 years with no excessive Calcium in 4,800 patients – Dec 2018
Vitamin D - at least 4,000 IU to achieve 40-60 ng and reduce risk of early death – Holick June 2018
Vitamin D supplementation guidelines (adults – 50,000 IU per week) – Feb 2017
Vitamin D math mistake had been made, adults need at least 8000 IU – July 2017
- they admitted their mistake, but did not charge their report, which Canada and many other countries copied
1000 IU should be the new vitamin D RDA (if you think 20 ng is enough) - May 2017
Vitamin D levels have been crashing since 1995 (Polish Children, Elite Military, etc)
Note: Many studies have also concluded that Vitamin D needed is proportional to weight