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Vitamin D Resources



Frequently Asked Questions

Dr. Dowd has assembled the questions he most frequently answers for his patients and other readers of the book. View the FAQs...


Free Risk Assessment

Try the free assessment tool and find out if you are at risk for vitamin D deficiency like more than 60% of Americans. Try it now...


Supplements Guide

In response to a flood of questions about what vitamin D products to take we have created this helpful guide to finding the right Vitamin D supplements.

References from the Book

We've compiled the complete references from the book and organized them by chapter. Find a reference...


Sunlight Exposure Calculator

We created a tool that tells you how long you should be out in the sun on a given day to get enough vitamin D. Free Sunlight Calculator...


Latest News

All of the latest news about vitamin D, Dr. Dowd, and The Vitamin D Cure can be found here. Latest News

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