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Vitamin D3 1000 IU

Vitamin D3 1000 IU can be found in two of the three AdvaCAL calcium supplement formulas. The Vitamin-D3-1000-IU | Review Articlethird, called AdvaCAL INTENSIVE provides 1700 IU of vitamin D3 daily.  Vitamin D3 1000 IU is the minimum level of daily intake now recommended by some bone health experts.  Ironically, the current recommended daily intake of vitamin D by the Food & Drug Administration (FDA) is only 400 IU.

According to the National Institutes of Health Fact Sheet on Vitamin D:

“Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis.
Vitamin D is essential for promoting calcium absorption in the gut and maintaining adequate serum calcium and phosphate concentrations to enable normal mineralization of bone and prevent hypocalcemic tetany. It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts. Without sufficient vitamin D, bones can become thin, brittle, or misshapen. Vitamin D sufficiency prevents rickets in children and osteomalacia in adults. Together with calcium, vitamin D also helps protect older adults from [bone loss].”

Importance of Vitamin D
Michael Holick, MD, PhD has served as a consultant for AdvaCAL supplements.  He recommended that the daily intake of AdvaCAL contain at least vitamin D3 1000 IU. In his recent book, called the Vitamin D Solution, Dr. Holick notes:

“I have been traveling around the world not only lecturing about vitamin D but also hearing from physicians how common vitamin D deficiency is. It’s not only the most common nutritional deficiency in the world, but it’s also the most common medical condition, affecting at least one billion people.

•    50  percent to 100 percent of children living in Europe and the United States are at high risk of being vitamin D deficient.

•    A recent study revealed that there’s been a 22 percent reduction in vitamin D levels in the general U.S. population in the past decade.

•    In 2009 researchers from Harvard and the University of Colorado revealed that 70 percent of whites, 90 percent of Hispanics, and 97 percent of blacks in the United States have insufficient blood levels of vitamin D: their study was published in the Archives of Internal Medicine.

•    Near the equator—in South Africa, Saudi Arabia, India, Australia, Brazil, or Mexico, for example—it’s been estimated that between 30 percent and upwards of 80 percent of children and adults who have minimum sun exposure are vitamin D deficient or insufficient. “

Several factors contribute to the recommendation of vitamin D3 1000 IU or more by supplementation. 

Vitamin-D3-1000-IU | Review ArticleMany people derive vitamin D from sunlight, not food. With the recent fears of sun exposure, people are applying more sunscreen or staying out of the sun.  Supplements have become a preferred source: Some calcium supplements actually now feature vitamin D3 1000 IU per daily serving.

The FDA is currently reviewing its recommended daily intake of the sunshine vitamin. Since health experts researchers believe vitamin D deficiency needs to be addressed aggressively, some  hope the  new FDA recommendations for daily intake will equal or surpass Vitamin D3 1000 IU.