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Vitamin D Truths (and Truthers)

October 29, 2025 · 41 min

Show notes

Few nutrients get as much hype as vitamin D. It’s been promoted for everything from stronger bones and better mood to reduced risk of chronic disease and cancer prevention. And during the COVID-19 pandemic, a wave of self-proclaimed “vitamin D truthers” took things further—claiming massive doses could prevent or even cure the virus. But what does the science actually say about how much Vitamin D you should be taking? And are there truly health benefits of mega-dosing Vitamin D? Join us, two Registered Dietitians, as we dig into the ‘sunshine vitamin’ and shed light on the facts (and fiction) surrounding this much-debated nutrient.

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Things we talked about and additional reading:

Sunlight and Vitamin D: A global perspective for health

The Vit D-Folate Hypothesis for Skin Pigmentation (and other hypotheses)

Unexpected actions of vit D in innate and adaptive immunity

Vit D Supplementation and depression meta-analysis of RCTs

Vit D status and COVID-19 severity (observational data #1)

Vit D status and COVID-19 severity (observational data #2)

Vit D from cod liver oil and and COVID-19 incidence

Vit D Supplementation with single high dose and hospital LOS in COVID-19 RCT

Vit D Supplementation and COVID-19 review/meta-analysis

Vit D Supplementation in COVID-19 for deficiency

COVID-19 and Vit D Misinformation on Youtube Analysis

Vit D Supplementation on Clinical Outcomes in Older Adults

Vit D Supplementation and Prevention of Cancer and CVD

Vit D and Cancer Risk / Mortality Research Challenges

The effect of sunscreen on vit D review

Sunlight: Time for a Rethink?

FTC charges Eric Nepute for Violations

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**This podcast is for information purposes only, is not a substitute for individual medical or mental health advice, and does not constitute a patient-provider relationship**

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