Check this one out, the more I read about vitamin D the more that I am certain it is a critical component to a balanced nutritional eating plan.
Vitamin D insufficiency is thought to be a key contributor to many human diseases including several cancers, diabetes, cardiovascular disease, depression, and autoimmune diseases.1,2
Yep, the evidence is becoming overwhelmingly apparent, vitamin D can reportedly prevent some cancers. As Dr. John Wycoff, a regular guest on the talk show has stated, vitamin D may prevent up to 1/3 less cancer. And at an average cost of 700,000.00 could be a massive saving to our healthcare situation.
Scientists have found that Vitamin D has biological actions in almost every cell and tissue in the human body. What is troublesome is that vitamin D deficiency is now recognized as a pandemic, affecting 30-50% of the population.2,3
Vitamin D regulates several genes and cellular processes related to cancer progression. Some of the most groundbreaking findings in nutrition science in recent years have been evidence of the powerful protection provided by vitamin D against common cancers:
Breast cancer: About 75% of women with breast cancer are vitamin D deficient.4 A 2009 meta-analysis of 19 studies established a strong inverse relationship between circulating vitamin D levels and breast cancer – women in the highest vitamin D range reduced their risk of breast cancer by 45%.5 read more
Colorectal cancer: A 2009 review of 25 studies found that sufficient vitamin D levels were consistently associated with reduced risk of colorectal cancer.6 Even after diagnosis with colorectal cancer, higher vitamin D levels are associated with reduced mortality.7
Cancers of the prostate, pancreas, lung, and endometrium are also associated with vitamin D insufficiency.2,8
For most people, the principal source of vitamin D is production by the skin in response to sunlight. Very few foods naturally contain vitamin D, and achieving adequate vitamin D levels via sun exposure is difficult, considering that most of us work indoors, and cover our body with clothing, especially in the winter months. Plus, sun exposure to assure optimal Vitamin D status may damage and age the skin increasing wrinkling and the risk of skin cancer.
To maintain adequate blood levels of vitamin D, it is extremely important for individuals with limited sun exposure to ingest supplemental vitamin D.
1. Holick MF. Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease. Am J Clin Nutr 2004;80(suppl):1678S- 88S
2. Holick MF and Chen TC. Vitamin D deficiency: a worldwide problem with health consequences. Am J Clin Nutr 2008;87(suppl):1080S- 6S.
3. Lee JH et al. Vitamin D deficiency an important, common, and easily treatable cardiovascular risk factor? J Am Coll Cardiol. 2008 Dec 9;52(24):1949-56.
4. Hines SL et al. Breast cancer survivors and vitamin D: A review. Nutrition. [Epub ahead of print]
5. Chen P et al. Meta-analysis of vitamin D, calcium and the prevention of breast cancer. Breast Cancer Res Treat. 2009 Oct 23. [Epub ahead of print]
6. Zhou G et al. Optimizing vitamin D status to reduce colorectal cancer risk: an evidentiary review. Clin J Oncol Nurs. 2009 Aug;13(4):E3-E17.
7. Ng K et al. Prospective study of predictors of vitamin D status and survival in patients with colorectal cancer. Br J Cancer. 2009 Sep 15;101(6):916-23. Epub 2009 Aug 18.
8. Peterlik M et al. Calcium, vitamin D and cancer. Anticancer Res. 2009 Sep;29(9):3687-98.