Vitamin Trader - Healthy Discounts on Quality Vitamins

Having an optimal amount of Vitamin D in the body can improve calcium absorption as much as 50 percent, and is known to be one of the most potent single factors that can improve calcium absorption for optimal bone density. Vitamin D is also known to affect muscle strength, so elderly people fall down less, which also can reduce the risk of fracture.

Vitamin D3 or cholecalciferol is made naturally in the body, stimulated by exposure of the skin to sunlight. Vitamin D3 is over three times (340 percent) better utilized in the body than Vitamin D2.

One study of 290 people showed that 43 percent were deficient in Vitamin D when they took the current RDA of Vitamin D (200 to 400 IU, depending on age.) The government's nutrition advisors are recommending that the National Academy of Sciences raise the RDA of Vitamin D to 1000 IU per day.* Vitamin D is safe for long term use at 2400 IU per day according to the National Academy of Sciences' Institute of Medicine. The Lowest Adverse Effect Level is 3800 IU per day and the Minimum Toxic Dose is 50,000 IU.