Grassroots Health participants Vitamin D vs age, intake, and resulting level
Grassroots Health D-Action Project
Note: the D-action participants pay a lot to keep their vitamin D levels 40-50 ng
They are tested 4X per year (@ $70/test), so they pay about$300/year. ($ test + $ vitamin d)
Note: Henry Lahore, admin of VitaminDWiki, pays$47 for a test once every 18 months, for a total annual cost of $47*2/3 + $17(vitamin D) = $50/year
Neither cost includes cofactors: Omega-3 is the most expensive cofactor
Short url = http://is.gd/vitdage
See also VitaminDWiki
Chart of Vitamin D levels vs disease - Grassroots Health June 2013
Vitamin D supplementation - Grassroots Jan 2013
Response to high dose vitamin D is limited by vitamin A - July 2013
Overview Vitamin D Dose-Response
