by Blythe Ayne (Author) Save Your Life with the Dynamic Duo - D3 and K2 Is a readily accessible read on the extremely vital importance of Vitamin K2 and D3 supplements in your daily life. In addition, the book is jam-packed with cutting-edge studies of the application of D3 and K2 in medical settings, discussing actual utilization-and, in many cases, astounding successes-looking at over forty diseases. The facts are out there, my friend. And if you, or someone you love - including your dog - have health issues, or intend to prevent them, the time has arrived to become familiar with D3 and K2. Much of the World's Population is D3 and K2 Deficient Medical and scientific estimates are that as much as 80% of the world's population is vitamin D deficient.