Hey Fisky wrote:
A few questions for you:
1. Any worries about taking the mega-dose of Vitamin D? I take 6000 IU a day and I'm a believer. You take more than triple that amount though.
2. Any thoughts on Vitamin K MK7 to go in combination with the Vit. D? My sources tell me the K is necessary to balance the D somehow. (not pretending I understand that).
3. Are your books available? Link?
1. I increased from 7000 IU/day to 20,000 when Delta arrived. I test D level every 8 months or so. The RDA on D is controversial. It could be MUCH higher than the recommended RDA. We know it can be toxic at extremely high levels. Arctic explorers died who ate polar bear liver, which apparently contains over a million IU of D. The articles I've read say D levels should be below 100 or 150. I'm currently at 95. The studies on D show it needs to be at/over 30 to provide a prophylactic and therapeutic effect on covid. It takes about 8 months for D levels to plateau once you start taking it so I'll test every 8 months or so to keep my level near 100.
Studies show that for seniors (me), obese, and Blacks, it's hard to raise D levels even with supplementation. In one early study... since "debunked" because it wasn't double blind, clinical trialed, Big Pharma backed... the risk of severe covid was 17 times greater for patients with D levels below 20 versus above 30. The problem with these studies is that it's very hard to get D levels over 30 naturally unless you're a light-skinned, young person who lives in the sun.
While over 100 vitamin D clinical trials are underway, I don't expect any major announcements because most of the studies are giving subjects vitamin D AFTER they've been admitted to the hospital and it's a relatively low dose... 4,000 IU, for example.
2. Vitamin K helps with the absorption of vitamin D. The Kirkland brand was a lot cheaper than the Life Extension D3+K2 so I thought I'd just take more D3. My D level with 7,000 IU + K2 was 82. My D level a year later at 20,000IU and no K2 is 95.
3. Thanks for asking. My book is 200 Tips Every Runner Should Know. It's available on Amazon as a paperback or ebook. As a veteran runner, you'll know most of the tips, but you'll find a few gems that will help you... and lots of stuff on injury prevention and rehab. The front matter includes testimonials from Olympic Trials qualifiers, age group world record holders, and mid-pack recreational runners.