Researchers analysed data from the Nurses Health Study, which includes over 83,000 women, to study the relationship of calcium and vitamin D intake to type-2 diabetes.

The conclustion after 20 years of follow-up, was that a combined daily intake of over 1,200 mg of calcium and more than 800 IU of vitamin D was associated with a 33 percent lower risk of type-2 diabetes. Interestingly, dietary vitamin D intake did not appear to provide any statistically significant benefit. It was noted that the women who supplemented with at least 400 IU of vitamin D had a 13% lower risk of diabetes when compared to those who took less than 100 IU per day. Both dietary and supplemental calcium resulted in decreased risk of type-2 diabetes, and those with overall intakes above 1,200 mg had a 21% lower risk than those who got less than 600 mg per day.

Elevated intakes of vitamin D and calcium, especially from supplements, are significantly associated with lower incidence of type-2 diabetes.

Article Source: Diabetes Care 29:650-656, 2006.

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63 studies were reviewed by researchers (studies starting 1966 to 2004) that examined the relationship between vitamin D and certain types of cancer. A protective relationship was found in the majority of studies, between sufficient vitamin D status and lower risk of cancer, especially in cancers of the ovary, breast, prostate and colon.

Diet and exposure to sunlight are they ways Vitamin D is acquired. Dietary sources can include products such as milk, yogurt, cheese and fortified orange juice. A typical serving provides approximately 100 international units (IU). Raising the overall intake to 1,000 IUs per day is suggested by researches, as well as considering a Vitamin D supplement. This could be especially important for people living in areas, where shorter days and longer nights result in less vitamin D from sunlight.

Evidence from the study suggests that improving vitamin D status through diet and supplements could reduce cancer incidence and mortality with few or no adverse effects and very low cost.

Article Source: American Journal of Public Health. Feb 2006. 96(2):252-61.

Other recently published studies show vitamin D exerts anti-cancer benefits for both men and women in regards to breast, prostate, and lung cancer. See below:

* Vitamin D intake and breast cancer risk in postmenopausal women: the Iowa Women’s Health Study. Article Source: Cancer Causes Control. Sep 2007. 18(7):775-82. Epub 2007 Jun 5.

* Protective role of 1, 25-dihydroxyvitamin D3 against oxidative stress in nonmalignant human prostate epithelial cells. Article Source: International Journal of Cancer. Jun 2008. 122(12):2699-706.

* Vitamin D receptor expression in normal, premalignant, and malignant human lung tissue. Article Source: Cancer Epidemiol Biomarkers Prev. May 2008. 17(5):1104-10.

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