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Nutrition with Judy | Carnivore Diet

112. Truths About Vitamin A and Toxicity from Foods - The Science with Dr. Garrett Smith - Part 1

65 min • 24 maj 2021

In this episode with Dr. Garrett Smith, we discuss the different forms of vitamin A and the body’s ability to absorb these nutrients. 

You can view the YouTube video here: https://youtu.be/vS0eZK5LIkE

We discuss he following in this 2-part episode: 

  • Basics about Vitamin A
  • Can eating natural Vitamin A from foods, especially animal sources, be toxic?
  • Is vitamin A from supplements and food sources the same?
  • Is there a difference in toxicity between natural and synthetic forms of Vitamin A?
  • Does the body really turn food Vitamin A into the same chemicals as Accutane and Retin-A?
  • Is there a variation from person to person in terms of how susceptible one might be to Vitamin A toxicity?
  • How much liver should a pregnant woman eat?
  • How much liver should you eat for bone health?
  • How much liver should a baby eat?
  • What is the relationship between Vitamin A toxicity, insulin resistance, and thyroid function?
  • Weston A Price, Ray Peat and Nose to Tail Carnivores—what they all have in common
  • Zinc vs Vitamin A
  • Vitamin D vs Vitamin A

Citations discussed in episodes: 

Video with Grant Genereux: https://www.youtube.com/watch?v=7OC4dwGp8Q0

Nutrition with Judy Liver Post: https://nutritionwithjudy.com/liver-and-risks-of-vitamin-a-toxicity/

https://pubmed.ncbi.nlm.nih.gov/3655980/

https://pubmed.ncbi.nlm.nih.gov/3356421/

https://vcahospitals.com/know-your-pet/vitamin-a-toxicosis-in-dogs

https://docs.google.com/presentation/d/1PHloTw4T-flhCHWVZIyqiZWDJdFIBQA9IlyxhR_Zz4Y/htmlpresent

https://www.sciencedirect.com/science/article/pii/B9780323352147000317

https://pubmed.ncbi.nlm.nih.gov/30514131/

https://pubmed.ncbi.nlm.nih.gov/30475970/

https://www.youtube.com/watch?v=WX_HU7FwxBU

https://pubmed.ncbi.nlm.nih.gov/7189278/

https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1009.4901&rep=rep1&type=pdf

https://www.nejm.org/doi/full/10.1056/NEJMe020167

https://en.wikipedia.org/wiki/Xavier_Mertz#Legacy

https://ttu-ir.tdl.org/bitstream/handle/2346/13806/31295003974952.pdf?sequence=1

https://www.youtube.com/watch?v=AzfU10Pv36c

https://pubmed.ncbi.nlm.nih.gov/?term=hypervitaminosis+A+hypercalcemia

https://academic.oup.com/cardiovascres/article/36/3/293/298591

https://pubmed.ncbi.nlm.nih.gov/18916905/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC55

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