Published on March 26, 2021

Video Friday: Healthy Society Series: The Health Benefits of Vitamin D and Solar UVB, presented by Carole Baggerly, Joan Lappe, Carol Wagner, and William Grant

It’s Video Friday! This is a video recording (includes PowerPoint slides!) of the podcast hosted by the Commonwealth Club, which aired on March 9. It features GrassrootsHealth Founder and Director Carole Baggerly, along with Drs. William Grant, Carol Wagner and Joan Lappe, as they discuss evidence of vitamin D’s important health benefits, including those for pregnancy, cancer, and COVID-19.

Please take a moment to watch and share the video along with our detailed information below.

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After watching the video, be sure to make note of our added details below.

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Vitamin D for Cancer, Pregnancy, COVID-19, and OUR Health

Here is a quick summary of what this video discusses, along with additional information and details about vitamin D:

Carole Baggerly, Founder and Director of GrassrootsHealth (4:24)

  • Carole Baggerly founded GrassrootsHealth after learning about vitamin D while researching solutions to help her own body fight breast cancer. At the time, it was difficult for an individual to get their vitamin D level tested, even through their own health care provider. Now, the GrassrootsHealth cohort is the largest self-sponsored, self-testing research project (citizen science!) to have collectively achieved massive awareness of the value of vitamin D.
  • The incidence rate of breast cancer has barely ‘budged’ over the last couple of decades, as the number of women (and to a lesser extent men) being diagnosed has stayed the same. While the number of lives saved has increased due to improvements in treatment, there has been close to zero effort and research implementation put into prevention, where our energies would serve the most good. This is despite the fact that we know vitamin D could make a huge difference!
  • The disease burden for breast cancer, Type 1 Diabetes, preterm births, and atrial fibrillation is enormous and unnecessary when considering the benefit that could be achieved by implementing nutrient testing, education, and supplementation programs to help with prevention – especially with vitamin D.

Dr. Joan Lappe, PhD, RN, Professor, Creighton University (17:46)

  • Dr. Joan Lappe reviews the evidence connecting vitamin D to cancer. According to the American Cancer Association, an estimated 1.9 million new cases of cancer will be diagnosed in 2021 with over 600,000 cancer deaths.
  • Vitamin D has several cancer-fighting properties and evidence has been published by many scientists including Drs. Garland and Lappe to demonstrate the effect vitamin D can have on cancer incidence.
  • Scientific evidence strongly suggests that vitamin D and UVB significantly reduces the risk of cancer and cancer deaths, and a minimum level of vitamin D is necessary for these benefits and overall health.

Dr. Carol Wagner, MD, Professor, Pediatrics Dept., Medical University of South Carolina (29:45)

  • Dr. Carol Wagner focused on the necessity of vitamin D adequacy (achieving and maintaining a vitamin D level of at least 40 ng/ml or 100 nmol/L) in pregnancy and babies.
  • Black and Hispanic women are more likely to be deficient; blacks are 20 times more likely to be vitamin D deficient than white women! It is a global problem, affecting mothers and babies around the world.
  • Vitamin D deficiency during pregnancy can lead to a greater risk of preeclampsia, preterm birth, gingivitis, periodontal disease, impaired fetal growth, dentition, RSV, gestational diabetes, neurodevelopmental differences – as well as profound effects during pregnancy and across lifespan of the unborn child!
  • 40 ng/ml (100 nmol/L) is the minimum target for pregnant women – women must check their levels as early in pregnancy as possible, optimally before they even conceive, in order to avoid the risks of deficiency. It is important for postpartum and breastfeeding as well.

Additional Key Points:

Are You Getting Enough Vitamin D for Your Health?

With almost 90% of the general population having vitamin D levels below the recommended 40-60 ng/ml (100-150 nmol/L), it is obvious that most people need more vitamin D. While most of us cannot achieve a vitamin D level of 40-60 ng/ml from sun alone, either due to our lifestyle, where we live, or other circumstances, we can certainly reach those levels with the right amount of supplementation.

Below is a guide for how much you might need, and who may need more. Your levels can be tested safely at home – order your home test kit today.

Click to Enlarge & Print

By joining the GrassrootsHealth projects, you are not only contributing valuable information to our study, but you are also gaining knowledge about how you could improve your own health through measuring and tracking your nutrient status, and educating yourself on how to improve it. Do you know what your status of vitamin D, omega-3s, and other essential nutrients is? Could your levels be improved? Test now to find out!

We now have a NEW GIFTING SERVICE that allows you to quickly send ‘Gift Cards’ to friends, family and coworkers who you consider might need immediate access to testing, and to Claim the Joy of Your Health TODAY. Give the gift today!

What does the Research Say about Vitamin D & COVID-19?

It’s TIME to start saving lives! If you can help PREVENT the majority of the death, it’s time! What’s it costing you/us not to take action NOW?

There is much published research that supports a clear link between vitamin D and COVID-19 showing that higher vitamin D levels are related to:

a decreased risk of testing positive for COVID-19

increased viral SARS-CoV-2 RNA clearance

better clinical outcomes among patients with COVID-19

less severe COVID-19 disease

decreased risk of death due to COVID-19

Be sure to educate yourself on the benefits and importance of vitamin D for immune health, and take steps to ensure you and your loved ones are getting enough.

You can review all of the COVID-19 and immune health information we have shared on this page.

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!