Informative vitamin D guide with practical advice, though promotes author's sublingual product. Helped address my deficiency.
Essential vitamin D resource with actionable steps for deficiency management, though biased toward sublingual supplements. Blood test results validated approach.
This review is from Amazon.com for product:
Power of Vitamin D: A Vitamin D Book That Contains The Most Scientific, Useful And Practical Information About Vitamin D - Hormone D
I read this book cover to cover and found it very interesting, however much of the information can be found easily on the internet on major sites (Vitamin D council)
The author's writing style is not obnoxious and is easy to read (unlike the first Vitamin D book I bought from Amazon by Jeff Bowles which was garbage). Dr. Zaidi also comes across like he knows his stuff.
At a few times throughout the book, the author suggests purchasing his own sublingual vitamin D product, and says sublingual is the best way to take it (I call BS and think oral pills are 100% fine).
I finally got around to getting my blood tested today and according to Dr. Zaidi, it is severely low (also very low according to the lab I got it tested at). I am currently beginning to take 10,000IU a day to try and get it where it needs to be, as well as Vitamin K2 and magnesium. I will edit later with my results and am planning on getting tested again in a few months.
For anyone on the fence on getting this book, I would definitely recommend it, it can't hurt and will most likely teach you a lot!
Vitamin Basics & Tips
Vitamin D plays a crucial role in calcium absorption, immune function, and bone health. While sunlight remains the primary natural source, modern indoor lifestyles and sunscreen use have made deficiencies increasingly common. The recommended daily allowance (600-800IU) often falls short for deficient individuals, with some experts advocating temporary high-dose supplementation (10,000IU) under medical supervision.
Sublingual (under-the-tongue) supplements claim better absorption than traditional oral pills, though research remains inconclusive. Vitamin K2 and magnesium act as crucial cofactors - K2 directs calcium to bones rather than arteries, while magnesium aids vitamin D metabolism. Regular blood tests (aiming for 40-60 ng/mL 25-hydroxyvitamin D levels) are essential for monitoring progress.
Dietary sources like fatty fish and fortified foods provide limited vitamin D. Those with darker skin, obesity, or digestive issues may require higher doses. Always consult healthcare providers before starting high-dose regimens, as excessive vitamin D can cause toxicity when combined with certain medical conditions or medications.
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