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75 min

To D or Not to D

Regenerative Whole Health Show: To D or Not to D

Multiple studies in the last two years have shown that with low vitamin D levels, your risk of very serious consequences to viral infection is high. With robust vitamin D levels, those risks drop close to zero.

Join KnoWEwell’s Chief Health Officer, Tom O’Bryan, DC, CCN, DACBN, and founder of, to learn what the science says. These are essential insights for you and your family’s protection and optimal health.

*This course is FREE in most KnoWEwell member plans – see this FAQ for details. View all Education Center FAQs here.

Learning Objectives

  • Does it help the immune system work better?
  • Is it safe for me?
  • Is it safe for children?
  • How do I know if I need to take vitamin D?
  • How much should I take?
  • How much should my children take?

Related Content – Vitamin D: Foods and Nutrients

Related Content – Vitamin D: Overview

To D or Not to D
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Frequently Asked Questions

What courses are included in my membership?

*All courses designated, “FREE for Members” included in: 


  • Pathfinder membership plan
  • Controller / Lifetime membership plan


  • Silver membership plan
  • Gold membership plan

Plus the “30 Days to WELLthier Living” course ($30 value) and Dr. Tom O’Bryan’s “Betrayal” course ($97 value) are included in all Lifetime and Gold memberships.

If you are not already a member of KnoWEwell, get started for FREE here. Existing members can upgrade their membership here to access 50+ and growing educational programs at no additional cost.

Will I receive special pricing on courses not included in my membership?

Some KnoWEwell memberships offer discounted pricing on additional courses. Pathfinder and Silver members receive a 10% discount while Controller and Gold members receive a 20% discount. When you are logged in as a member, you will automatically see your discounted prices.

What is the cost of the courses if I reside in a country outside the US?

In order to make our educational courses more equitable and accessible to all globally, most of our course prices for KnoWEwell members are adjusted based on the World Bank data that classifies countries by income level. To get country-specific pricing: 

  • Individuals must have a Pathfinder or Controller / Lifetime membership on
  • Providers must have a Silver or Gold membership on
How can I join

Individuals can get started for FREE by clicking here.

Providers can get started for FREE by clicking here.

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