Vitamin D Reduces Colds and Flu

In the GrassrootsHealth questionnaire that accompanies D*action, participants are asked whether they had a cold or flu in the...

Vitamin D Intake & Toxicity

Is your doctor telling you that you are taking too much vitamin D? The chart below, based on a review...

How successful were people on getting vitamin D to recommended ranges (40-60 ng/ml) on sunshine and food alone? Data...

NHANES report on vitamin D levels, separated by race. African-American children have the highest levels of deficiency due to...

NHANES data on children, under 18 years old, separated by age. Only 9% overall are in recommended ranges.

Results of multiple studies regarding the association between 25(OH)D and various diseases...

Scientists’ Call to D*action A Scientists’ Call to Action has been issued to alert the public to the importance...

Pain Level vs Serum Level Using data provided by participants in the D*action study, GrassrootsHealth was able to compare...

Download and share these fun and educational cartoons featuring Sunny Hippocrates! Sunny’s Sun Wisdom Poster Download PDF

Sunlight and Vitamin D: Necessary for Public Health Carole A. Baggerly BA, Raphael E. Cuomo MPH, Christine B. French...