Rethinking Vitamin D: Myths, Risks, and the Role of Sunlight

Episode Highlights With Jim

• Is Vitamin D harmful?
• Most of the work done on Vitamin D has been associative data
• The difference between D3 (intermediate molecule) vs storage form vs active form
• Different forms of Vitamin D we can test for and why these aren’t always accurate
• Is there actually accurate testing for Vitamin D?
• How to actually test the active form of Vitamin D in the body
• Why he doesn't recommend taking an isolated pill of vitamin D
• The reason he says you don’t actually need vitamin K to absorb Vitamin D
• Genetic components of Vitamin D receptors and use
• Many genetic mutations are meant to be an advantage 
• Why you aren’t going to get over 60 on a vitamin D test naturally
• One snip that is important for vitamin D
• Misconceptions about Vitamin D during pregnancy
• The difference between getting Vitamin D as a supplement vs making it from sun exposure
• We make a sulfated form of D3 from sun exposure
• 7-Dehydrocholesterol from the sun (not present in supplements)
• Why the most important molecule from sun exposure can’t be obtained from a supplement
• How PUFA molecules interact with the sun equation and his take on PUFAS
• How viruses like Epstein-barr can interfere with the vitamin D process in the body
• What to do if you’ve taken a lot of oral Vitamin D and think it might have caused an issue
• How vitamin K can actually be helpful and why magnesium is important too
• Can sun exposure actually help avoid cancer
• The problems with sunscreen
• What to know for healthy sun exposure and what it means when we look pink for a few minutes after sun exposure
• The importance of not wearing sunglasses in the sun because it makes your more likely to burn

Resources We Mention

• Jim Stephenson - Facebook Group
• Jim Stephenson - Substack
• AIDS: The crime Beyond Belief by William L. C. Scott
• Benefits of Sunlight: A Bright Spot for Human Health
• Absence of Seasonal Variation in Serum Concentrations of 1,25-Dihydroxyvitamin D Despite a Rise in 25-Hydroxyvitamin D in Summer
• UVB Light Prevents Atherosclerosis By Reducing Inflammation
• The "D" Vitamins by Jack DeRuiter
• A human skin equivalent model that mimics the photoproduction of vitamin D3 in human skin
• Epstein-Barr virus encoded EBNA-3 binds to vitamin D receptor and blocks activation of its target genes

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