Learn how the power of nutrients can make a difference in your health.

Take charge of your health. Help advance nutrient research. Be part of our collective force for healthy people and a healthy planet.

Find out what your vitamin D, magnesium, and Omega-3 Index levels are by participating today!

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How the Magnesium *PLUS Focus Project Works

In the privacy of your home you can now check your vitamin D, magnesium, and Omega-3 Index levels together with an easy-to-use test kit. The lab fee for participation is $165 plus shipping each 6 months or with each testing sequence (for magnesium, Omega-3 Index, and vitamin D tests only; price may change if you choose to include additional tests). Suggested optional tests for this project include the Elements Panel (Magnesium along with Selenium, Zinc, Copper, Zinc:Coper Ratio, Cadmium, Lead, and Mercury) for an additional $69.  When your kit arrives, provide two blood samples, mail them to GrassrootsHealth, and 7-10 days after receipt back at the office with a completed online questionnaire, your levels will be available to you online.

Have you already participated in D*action?  While you will need to create a new account by registering in this new system, your previous vitamin D*action data will be combined with the new data gathered as part of the Magnesium *PLUS Focus project when you enter your original ID during registration. You will be given a new participant ID to use on your blood spot cards, and, your payment process, questionnaire, and results will all be available through this new account.

Enroll in the Magnesium *PLUS Focus Project

Be a force for change in your health and the health care system…

Join the new GrassrootsHealth nutrient field trial: the Magnesium *PLUS Focus Project

It’s simple:

IDENTIFY: You can’t know if your vitamin D, magnesium, or Omega-3 Index level is optimal just because you eat the right foods or take supplements – they each must be measured.


CORRECT: Once you know your levels they can be optimized with simple dietary and lifestyle changes.


MAINTAIN: Testing your levels every 4-6 months ensures that levels stay optimal.

Together, we can advance the standard of care to help ensure more people maintain healthy levels of these important nutrients.

Enroll Now!

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Memorial Day Sale! Save 15% off orders of $100 or more with code MEMORIAL24. Not valid on the T1D Prevention Test Kit. Sale ends 5/28/24 at 11:59pm PST.