Publisher's Synopsis
You might be surprised to learn that all these problems may be the result of a deficiency of one substance that has been misunderstood since its discovery in 1939. That substance is vitamin D3. While it is called a vitamin, vitamin D3 is actually a hormone. Its first medical use was to treat a childhood bone disease called rickets. And, since then nearly all the research on the benefits of vitamin D3 has been done at doses that are 50 times lower than the optimal doses described in this book. Maybe when reading this book, you will know Benefits, Deficiency, Sources, And Dosage...and Understand About Vitamin D3
