Published on March 10, 2022

Here are some examples…

Key Points

  • To make sure you and those around you are getting enough vitamin D to prevent deficiency, testing vitamin D levels is an essential step
  • Examples of medical institutions and community wellness programs that have put such a vitamin D protocol into practice to get patient vitamin D levels to 40-60 ng/ml (100-150 nmol/L) include the Medical University of South Carolina (MUSC), for all prenatal patients, and the Pure North program in Canada
  • North Dakota Nurses Association recently spotlighted the efforts of Beth Sanford in designing a vitamin D advocacy program for nurses and other health professionals; GrassrootsHealth is excited to be helping Beth on this project!


March (just after winter) is the time of year when vitamin D levels are at their lowest and the risk of deficiency is highest. Those who are not supplementing or using a UVB device are ate especially high risk for vitamin D deficiency. To make sure you and those around you are getting enough vitamin D to prevent deficiency, testing vitamin D levels is an essential step.

The short news clip below is an example of one doctor in Baltimore who tests all of her patients for vitamin D, and finds that most of them are low. Dr. Kathryn Boling recommends that all doctors should test vitamin D levels for their patients regularly – something GrassrootsHealth has been educating about since its founding.

What Results Could be Seen if All Doctors Implemented Routine Vitamin D Testing with a Goal of 40-60 ng/ml?

Imagine the health benefits that could be achieved if all doctors implemented vitamin D testing, education, and supplementation to get their patients up to 40-60 ng/ml (100-150 nmol/L)! According to recent research by Dr. William Grant, “…given the multiple indications of significant health benefits from raising serum 25(OH)D concentrations above 30 or 40 ng/mL as well as the near absence of adverse effects, significant improvements in health at the individual and population levels could be achieved.”

Examples of medical institutions and community wellness programs that have put such a vitamin D protocol into practice include the Medical University of South Carolina (MUSC), for all prenatal patients, and the Pure North program in Canada.

One outcome tracked in the Pure North program was the incidence of hypothyroidism and autoimmune thyroid disease. Patients in the Pure North program experienced a 30% reduced risk of hypothyroidism, and a 32% reduced risk of elevated anti-thyroid antibodies with vitamin D levels of 50 ng/ml (125 nmol/L) or higher, as well as a significantly lower risk of reporting brain fog, low mood, unrefreshing sleep, weight gain, or low energy (symptoms of low thyroid function).

Meanwhile, MUSC’s pregnant population received routine vitamin D testing at their first prenatal visit. A vast majority of the women (89%) had vitamin D levels less than 40 ng/ml (100 nmol/L) on their first vitamin D test and almost one-third (31%) had vitamin D levels less than 20 ng/ml (50 nmol/L). Black women had particularly low vitamin D levels; almost all (99%) were less than 40 ng/ml and approximately two-thirds (65%) were less than 20 ng/ml. Those who achieved a vitamin D level at or above 40 ng/ml closest to delivery had a 49% lower rate of preterm birth compared to those with vitamin D levels less than 20 ng/ml. These results prove that incorporating a simple vitamin D protocol can make a BIG difference in health outcomes!

Additional examples of the effects of vitamin D level on disease risk can be seen in our Disease Incidence Prevention Charts for both general health and pregnancy and childhood. These charts, based on published research, illustrate the decrease in incidence seen for diseases such as multiple types of cancers, diabetes, multiple sclerosis, preterm birth, postpartum depression, and other diseases in pregnancy and childhood.

Taking Action to Move Vitamin D into Practice: North Dakota Nurses Association Spotlight

Below is an update from the North Dakota Nurses Association, acknowledging Beth Sanford for her work in creating a vitamin D advocacy program for all health care professionals. GrassrootsHealth is excited to be working with Beth on this project!

Measure Vitamin D Levels at Home with GrassrootsHealth

You can implement your own vitamin D program, for you, your family and friends! Test at home as a participant of the D*action project, learn about vitamin D, its co-nutrients, and how to achieve your target level, calculate a dose of vitamin D to get to your goal, utilize supplements and sunshine to get you there, and repeat until you have found what works.

Having and maintaining healthy vitamin D levels and other nutrient levels can help improve your health now and for your future. Choose which additional nutrients to measure, such as your omega-3s and essential minerals including magnesium and zinc, by creating your custom home test kit today. Take steps to improve the status of each of these measurements to benefit your overall health. With measurement you can then determine how much is needed and steps to achieve your goals.  You can also track your own intakes, symptoms and results to see what works best for YOU.

Enroll in D*action and Test Your Levels Today!

What Does it Take YOU to Get Your D to 40 ng/ml (100 nmol/L)?

Did you know your health could be greatly affected by making sure you have a vitamin D level of at least 40 ng/ml (100 nmol/L)? Help us help you.

STEP 1 - Do you know what your vitamin D level is? If not, be sure to test today to find out.

STEP 2 – Determine your target level. Are you at your target level? Experts recommend a level of at least 40-60 ng/ml (100-150 nmol/L).

STEP 3 – Need to boost your level? Use the D*calculator to see how much vitamin D it may take to reach your target. Opt for the Loading Dose for a quicker boost.

STEP 4 – Optimize how your body absorbs and utilizes vitamin D with co-nutrients and these simple steps.

STEP 5 – Re-Test! This is an important step to make sure you have reached your target level, and to ensure you are not taking too much! Re-testing after 3-4 months is recommended.

STEP 6 – Adjust, Repeat…

Give your immune system the nutrients it needs to support a healthy you and protect yourself from unnecessary diseases, especially COVID-19.


The first Randomized Controlled Trial on vitamin D and COVID-19 has shown a 96% lower risk of ICU admission for those receiving vitamin D (as 25(OH)D to quickly boost vitamin D blood levels) along with the standard treatment, compared to those receiving standard treatment alone.

These results support many previous observational studies showing a relationship between vitamin D levels and intake and COVID-19 severity.

Review the Latest Nutrient Research for COVID-19

GrassrootsHealth Nutrient Research Institute has launched the new Immune Boost project with the use of our myData-myAnswers nutrient health system that nearly 15,000 people are already using for their health. Specific markers that influence immune health are suggested for testing as part of this project including:

  • Vitamin D
  • Omega-3 Index
  • Essential elements magnesium, selenium, and zinc
  • hsCRP

Our goal is to demonstrate how one can use the Nutrient Research Model established by Dr. Robert Heaney to show the effect of vitamin D serum levels of at least 40 ng/ml (100 nmol/L) on risk reduction for all ethnicities in the population. Status and intake of other nutrients will also be analyzed for any type of relationship to immune status and symptom severity. Join the project today!

Please let us know if you're interested in helping sponsor this project.

CLICK HERE for updates and new information about the project.

Through GrassrootsHealth Nutrient Research Institute, you can also test your essential elements magnesium, copper, zinc and selenium, toxins such as lead, mercury and cadmium, as well as your omega-3 levels, inflammation levels and thyroid stimulating hormone (TSH) level. Find out your levels today! Log on to the test selection page (click the link below) to get your tests and see for yourself if your levels can be improved.

Make sure you track your results before and after, about every 6 months!

Click Here to Access the Test Page

How can I track my nutrient intake and levels over time?

To help you track your supplement use and nutrient levels, GrassrootsHealth has created the Personal Health Nutrient Decision System called

For each specific supplement, you can track what days you take it, how much, and many other details.  This will help you know your true supplemental intake and what patterns of use work for you to reach and maintain optimum nutrient levels. Check it out today!