Details
View larger Product Profile Vitamin D is a fat soluble vitamin that is obtained from food, sun exposure, and dietary supplements. Once vitamin D is ingested or synthesized in the skin, it undergoes two hydroxylation reactions in the body, first in the liver to calcidiol (25-hydroxycholecalciferol), and then in the kidney to calcitriol (1, 25-dihydroxycholecalciferol). Vitamin D is critical for healthy bone development, remodeling, and maintenance.* It is also known to play a key roll in the maintenance of many other organ functions.*
Distinguishing Features:
• Only vitamin D3 (cholecalciferol)
• Important for bone health* View larger Vitamin D Deficiency In The U. S. Obtaining sufficient vitamin D from food and daily sun exposure can be difficult for many people. The National Health and Nutrition Examination Surveys (NHANES) have reported that the average intake of vitamin D has been declining and that many children and adults in the United States are likely to be vitamin D deficient. This trend may be due to increased body mass index (BMI), reduced dairy consumption, lactose intolerance, milk allergy, increased use of sun protection, and vegetarianism.
In breast-fed infants, human milk alone is not sufficient to provide the required amount of vitamin D. The American Academy of Pediatrics (AAP) recommends vitamin D supplementation in both infants and mothers. Women and older individuals also tend to have vitamin D levels that are lower than recommended levels. In the population above age 50 in particular, this may be caused by a slowed or compromised metabolism and poor absorption of vitamin D. Adequate vitamin D is essential for optimal health. Supplementation of vitamin D with Jarrow Formulas Vitamin D3 can contribute to the required daily vitamin D intake and thus promote healthy bones, immune function, and cell protection in both the young and the old.*
Bone Health* And Other Benefits