Vitamin d Articles, Information & Research

It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis [1-3]...Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two hydroxylations in the body for...

http://ods.od.nih.gov/factsheets/vitamind.asp

Vitamin D 3 is produced in skin exposed to sunlight, specifically ultraviolet B radiation. Vitamin D plays an important role in the maintenance of organ systems. ... It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts...

http://en.wikipedia.org/wiki/Vitamin_d

Vitamin D is found in many dietary sources such as fish, eggs, fortified milk, and cod liver oil...sun also contributes significantly to the daily production of vitamin D, and as little as 10 minutes of exposure is thought...

http://www.nlm.nih.gov/medlineplus/druginfo/natural/patie...

Two nutrients in particular, calcium and vitamin D, are needed for strong bones. ... Inadequate calcium significantly contributes to the development of osteoporosis. Many published studies show that low calcium intake throughout life is associated with low bone mass and high...

http://www.niams.nih.gov/Health_Info/Bone/Bone_Health/Nut...

Background Vitamin D is found in many dietary sources such as fish, eggs, fortified milk, and cod liver oil...The sun also contributes significantly to the daily production of vitamin D, and as little as 10 minutes of exposure is...

http://www.mayoclinic.com/health/vitamin-d/NS_patient-vit...

Vitamin D 3 is also present in fish liver oils and fatty fish. Human breast milk contains only small amounts of vitamin D. Vitamin D is stored mainly in the liver. Vitamin D 2 and D 3 are not active...

http://www.merck.com/mmhe/sec12/ch154/ch154j.html

Vitamin D 2 is less active in birds than vitamin D 3 and may also be less active in humans (2). When exposure to UVB radiation is insufficient for the synthesis of adequate amounts of vitamin D 3 in the...

http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/i...

Vitamin D is a fat-soluble vitamin found in certain foods. It is also formed in the skin as a result of direct exposure to sunlight...liver and kidneys convert vitamin D from food sources or sunlight to an active...

http://www.umm.edu/altmed/articles/vitamin-d-000340.htm

Low vitamin D levels among adults are fast becoming a growing epidemic and could spell trouble for the future health of the nation, according to a new study. Researchers found that not only has the number of Americans with low...

http://www.webmd.com/news/20090325/americans-low-on-vitam...

Vitamin D is vital for calcium absorption in bones and to improve muscle strength...intake for vitamin D is 200 IU per day for infants, children, and adolescents. A person age 19 to 50 needs 200 IU...

http://health.yahoo.com/musculoskeletal-overview/vitamin-...