From GrassRoots Health
US data thru 2014
Grassroots Health: 4X as many with 40 ng of Vitamin D
Some of the many great Grassroots Health Charts
- Supplements taken by US Adults, Grassroots Health – March 2019
- Omega-3 index - good level needed 2.4 grams of regular Omega-3 - Grassroots Nov 2018
- Vitamin D charts from GrassrootsHealth - May 2016 40 charts
See also Vitamin D Life
- Increased use of D category listing has
38 items along with related searches Vitamin D levels continue to rise in the US - April 20191016 visitors, last modified 01 May, 2019,