A number of organizations will now be actively promoting the GrassrootsHealth D*action project on their websites in order to help increase enrollment in the project and, to help continue 'Moving Research into Practice'.   



We would like to see this link spread to many sites!  If you have such a site or know some group that would be interested, please let us know and we can get them setup quickly. Contact Jen Aliano, Project Manager.

From the Vitamin D Council's newsletter:
"April is a perfect month to start you and family members in this project. It's the time of the year when you would likely have your lowest vitamin D levels and you can see how much action you may need to take to make sure you're getting enough vitamin D."
Your Data, Your Answers


Does your vitamin D level vary by season? 
Does vitamin D intake vary by season? 
What changes did people make from their 1st test to their second?

Key Points:
  • For the Northern Hemisphere, there is a seasonal variation.
  • Research question:  why would the serum levels be lower in the summer?  Are people staying out of the sun totally?  i.e., getting more sun in winter?
  • Note the intake from the 1st test to the 2nd doubled
  • The average intake for the 2nd test was right at 4000 IU/day, the upper limit recommended by the IOM.  This will get 50% of the population to about 47 ng/ml.


  1. Test annually, ideally in April/May
  2. Do 2nd test after baseline to confirm serum level in the 40-60 ng/ml (100-150 nmol/L) range



Family members need to be checked, too.  Please help them take advantage of this project to do an April test and spend a few minutes (10-15) to share their health information.  It can matter to them and, to public health of many.

Thanks so very much for your active participation in this D*action project. It is an opportunity for us all to truly save lives.


Carole Baggerly
Director, GrassrootsHealth
A Public Health Promotion & Research Organization
Moving Research into Practice NOW!

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