Short answer: Probably not. Animal studies showing a difference use huge doses in an unrealistic context. Human studies show they don’t at doses used. Human effect on PSA is vulnerable to regression to the mean and thoroughly unconvincing.

  This is a clip from a live Q&A session open to CMJ Masterpass members. In addition to this episode, you can access five other free samples using this link:   https://chrismasterjohnphd.substack.com/p/questions-on-vitamin-d-fatty-liver In that batch of free episodes you will also find the answers to these questions:

• What's the difference between 25(OH)D and 1,25(OH)2D when it comes to the VDR?
• Reversing Fatty Liver: How Long Does It Take?
• What if my A1C says I'm diabetic but my CGM says I'm fine?
• The 3 Phases of Fasting: And How to Get Kicked Out of Each One

If you want to become a Masterpass member so you can participate in the next live Q&A, or so you can have access to the complete recording and transcript of each Q&A session, you can save 10% off the subscription price for as long as you remain a member by using this link to sign up: https://chrismasterjohnphd.substack.com/qanda Learn more about the Masterpass here: https://chrismasterjohnphd.substack.com/about This snippet is from the June 16, 2022 AMA. The full recording and transcript is reserved for Masterpass members. Here is a preview of what’s included:

• What to do about persistent SIBO?
• Are there toxicity concerns for intravenous B vitamins?
• Should zinc be taken apart from oral rehydration salts?
• Why would magnesium cause erratic heartbeat, bad dreams, and tinnitus?
• How do you know if you have low stomach acid?
• What is a good sweetener to replace granulated sugar?
• Do I need to eat foods with calcium every day?
• What bread do I eat?
• Should you take vitamin D for COVID prevention if you have a history of hypercalcemia?
• What to do about extreme CFS, depression, anxiety, and brain fog when nothing seems to work.
• Why balance K2 with vitamin E rather than K1? Here’s a link to the full AMA: https://chrismasterjohnphd.substack.com/p/recording-and-transcript-of-the-june

Access the show notes, transcript, and comments here.