Vitamin D supplementation - Grassroots

http://www.grassrootshealth.net

A great summary chart

other charts are attached at the bottom of this page

See also VitaminDWiki

• Overview How Much vitamin D

• Is 50 ng of vitamin D too high, just right, or not enough

• How you might double your response to vitamin D

• How often might 50,000 IU vitamin D be taken - results of clinical trials

• Search VitaminDWiki for Grassroots or Grassrootshealth 818 items as of Jan 2013

• Response to Vitamin D: summary chart of 8 studies – March 2013

• Grassroots Health participants Vitamin D vs age, intake, and resulting level – Sept 2013