Vitamin D3 (cholecalciferol) is taken in the diet (from fortified dairy products and fish oils) or
is synthesized in the skin from 7-dehydrocholesterol by ultraviolet irradiation. The vitamin D …

The wide distribution of the vitamin D receptor provides a number of clinical targets for
vitamin D and its analogs. The wide distribution of CYP27B1, the enzyme required to convert …

Vitamin D is one of the oldest hormones. 1 Early in evolution as unicellular organisms
evolved and took advantage of the sun's energy for photosynthesis of sugars, they also …

Vitamin D 3 is made in the skin from 7-dehydrocholesterol under the influence of UV light.
Vitamin D 2 (ergocalciferol) is derived from the plant sterol ergosterol. Vitamin D is …

Vitamin D is well known to exert multiple functions in bone biology, autoimmune diseases,
cell growth, inflammation or neuromuscular and other immune functions. It is a fat-soluble …

Vitamin D is absolutely essential for the maintenance of a healthy skeleton. Without vitamin
D, children develop rickets and adults exacerbate their osteoporosis and develop …

Vitamin D levels depend on many variables, including sun exposure, age, ethnicity, body
mass index, use of medications and supplements. A much higher oral vitamin D intake than …

In Vitamin D: Physiology, Molecular Biology, and Clinical Applications, Second Edition,
leading researchers provide a comprehensive, highly readable overview of the biological …

Vitamin D is one of the most frequently used medicinal prod-ucts around the world. The
dietary intake is irregular because few food items contain vitamin D and is usually well …

Vitamin D deficiency is now being recognized as one of the most common medical
conditions worldwide. The consequences of vitamin D deficiency include poor bone …