In this episode we discuss:
- Whether vitamin A toxicity exists and is something you need to be worried about
- Whether Grant Genereux’s claims about vitamin A deficiency are valid
- Whether vitamin A is actually a poison rather than a vitamin
- What we think about the current state of the Ray Peat forum
- The research on vitamin A deficiencies and whether vitamin A deficiencies exist
Free Energy Balance Food Guide: https://jayfeldmanwellness.com/guide
Free Energy Balance Mini-Course: https://www.jayfeldmanwellness.com/energy/
Check out the Energy Balance Solution program here: https://www.jayfeldmanwellness.com/solution/
The Nutrition Blueprint: https://mikefave.com/the-nutrition-blueprint/
Click here to check out the show notes: https://www.jayfeldmanwellness.com/ep-119-vitamin-a-toxicity-examining-the-evidence-for-vitamin-a-deficiency
Timestamps:
0:00 – intro
1:09 – why we’re discussing vitamin A toxicity and Grant Genereux’s perspective
4:53 – closedmindedness within the “low vitamin A” sphere and how it compares to Ray Peat’s work
7:33 – how a low vitamin A diet can have benefits
9:27 – cautioning against the idea of "detox" as an excuse for negative effects and vitamin A toxicity as an unfalsifiable hypothesis
12:33 – the importance of evaluating information objectively while avoiding censorship, tribalism, fearmongering, and religiosity
21:17 – concerns with the current state of the Ray Peat Forum and how to recognize unsubstantiated claims
26:45 – Grant's initial critiques of the original studies on vitamin A deficiency are extremely weak and unsubstantiated
41:48 – introducing Wolbach’s 1925 study on vitamin A deficiency
45:47 – refuting Grant's argument that the retinoic acid in the vitamin-free casein would have caused toxicity
52:35 – refuting Grant's argument regarding confounding variables in lard and butter
1:02:53 – research on vitamin A deficiency and whether vitamin A deficiencies exist
1:20:32 – the necessity of vitamin A for pregnancy, fetal growth, and development
