This episode features our first guest, Grant Genereaux, whose pioneering work shows  retinol from animal foods, carotenoids from plant foods, and 'Provitamin A' skin treatments may actually be a lot more dangerous than we might imagine, and that there is abundant scientific research showing that excessive vitamin a in all forms is extremely toxic. In the second half of the interview we go further down the rabbit hole and explore how vitamin a was first discovered and classed as the first vitamin, and explore the validity of that classification. Please note that when we feature guests, as in this episode, our goal is to have them share what they have to teach us, because it may be helpful and accurate, but that we do not necessarily endorse their perspectives. We may sometimes have different guests with opposite ideas, and rather than bringing people on just to argue with them, our goal is to encourage them to share their perspective and ask clarifying questions, but it's ultimately up to you to decide what is true and what is relevant for you. References from this episode: RP - Detoxification Grant Genereux  Books Grant Genereux Discussion Forum There are many other studies referenced on the forum HERE RE: Birth Defects Teratogenicity of High Vitamin A Intake List of authors. Kenneth J. Rothman, Dr.P.H. The Acute and Chronic Toxic Effects of Vitamin A The Effect of Hypervitaminosis A in a Young Pig Hypervitaminosis A - By Kare Rodahl. Skrifter No. 95. 2nd link HERE Decreased Brain Function in the rat Total and Mitochondrial Nitrosative Stress, Decreased Brain-Derived Neurotrophic Factor (BDNF) Levels and Glutamate Up.... Accutane Graphic Vitamin A test UK If you’d like to know which Genetic Factors are influencing your Health, click HERE And use promo code “REJUVENATE” to tell Genetic Insights we sent you and  get 20% OFF your first order. You can find Elwin’s recommended Health Supplements here: https://feelyounger.net And remember to use code “REJUVENATEME” to tell them we sent you and to get 20% OFF your first order. You can follow Elwin on Twitter @therealelwin And you can find Krissy on Twitter  @KrissyHawkes Disclaimer: This Podcast does not contain medical advice. I am NOT a doctor. The contents of this Podcast, such as videos, text, graphics, images and other material are intended for entertainment, informational and educational purposes only and not for the purpose of rendering medical advice. The contents of this Podcast are not intended to substitute for professional medical advice, diagnosis or treatment.  Consult your physician for medical advice. Always seek the advice of a physician or qualified healthcare provider with any questions regarding a medical condition. Never disregard or delay seeking professional medical advice or treatment because of something you have heard on a Podcast. Before taking any medic