We get into the depths of years of research and study into Vitamin D
Sunlight provides a great source of vitamin d and you'll learn all about the dynamics involved
Dr. Hollick suggest the higher end of the 30 - 100 normal range..... 25 Hydroxy Vitamin D lab test, may be advantages to follow
Is Vitamin K an important element to supplement
The kidneys and the calcium connection to this subject is fleshed out here
The darker the skin, the less vitamin D the body will make
Vitamin D levels and the affect on the good, the bad and the ugly cholesterol
