Vitamin D3 1000 units capsules 90's
$6.95
The Importance of Vitamin D
Much is being touted these days about vitamin D - and with good reason. Studies suggest nearly half of all Americans - both adults and children - have insufficient levels of vitamin D. A chronic deficiency of vitamin D has long been associated with rickets, a childhood disease that can soften the bones and lead to fractures and bone deformities. But more and more clinical evidence is being amassed that indicates vitamin D is not just essential for helping to maintain healthy bones, but also for helping to maintain heart, breast, colon, and prostate health. Vitamin D also appears to play a part in helping to maintain good mental health and healthy carbohydrate metabolism.
It is essential to maintain healthy vitamin D levels throughout all stages of life, from fetal development to old age. The current recommended daily vitamin D intake of 400 IUs is based on the minimum allowance to protect against bone disease. However, an upward revision of the FDA's guideline is now under consideration in light of new research, especially pertaining to immune function. Researchers have found 2776 binding sites for the vitamin D receptor along the length of the human genome. These were unusually concentrated near a number of genes associated with susceptibility to autoimmune conditions such as MS, Crohn's disease, systemic lupus erythematosus (or 'lupus') and rheumatoid arthritis, and to cancers such as chronic lymphocytic leukemia and colorectal cancer. Although direct sunlight exposure is a good source of vitamin D, many people do not get enough sun due to season change, latitude, or lifestyle. Therefore, vitamin D supplementation can be of great benefit in these cases.
There are detractors who say, Vitamin D is the new vitamin A, the new folic acid, the new vitamin C, the new vitamin E, all of which have not lived up to the hype.[1]
There is the danger of over-prescribing and the "more is better" mindset. The WHO publication from 2008, Vitamin D and Cancer, pg. 23, states that higher as well as lower serum 25-hydroxyvitamin D concentration levels increased the risk for prostate cancer and colorectal cancer.
The amount of vitamin D needed to achieve minimum vitamin D sufficiency (commonly defined as a 32-ng/mL 25(OH)D blood level) depends on many factors and can vary significantly from individual to individual. Thus, the requirement for vitamin D supplementation needs to be individualized. Thorne's D-1000 supplies 1,000 IU of pure, vitamin D3 in each vegetarian capsule. This potency is ideal for maintaining optimum vitamin D levels in healthy individuals, allowing for 1000 IU to 3000 IU daily maintenance dosing.
1. Byers, Tim; Anticancer vitamins du Jour--The ABCED's so far. AM J EPIDEMIOL,172:1 (2010) PMID 20562190.
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