Megan Riley March 31, 2011. How did we get here? 1912: “vitamine” 1919: rickets in dogs, found cod liver oil to be an anti-rickets agent 1922: Elmer McCollum-

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Presentation transcript:

Megan Riley March 31, 2011

How did we get here? 1912: “vitamine” 1919: rickets in dogs, found cod liver oil to be an anti-rickets agent 1922: Elmer McCollum- “Vitamin D” 1930s: fortify with vitamin D 1951: vitamin D treatment for Hodgkin’s disease

Sunlight, supplements, or...

How much vitamin D?

Vitamin D test Vitamin D 25 Hydroxy level 25(OH)D level 25OHD level 25 hydroxyvitamin D Level serum 25-OHD concentration *Serum is the yellowish component of blood that is left when the blood clots

*If your test results are measured in nmol/l, simply multiply the above values by 2.5 to get the correct ranges.

Vitamin D Level Recommendations Minimum Optimal (ng/ml) High End of Optimum (ng/ml) Toxic Level (ng/ml) Bruce Hollis(ng/ml)32>250 Vitamin D Council (ng/ml) 5080 Vitamin D, A Neglected ‘Analgesic’ for Chronic Musculoskeletal Pain(ng/ml) 3050>150 Dr. Mercola (ng/ml) 5065>100 (excess) The Use of Vitamin D in Clinical Practice The Use of Vitamin D in Clinical Practice (ng/ml) 4070> 150

1989 Garland et. al Eight-year prospective study Risk of colon cancer was reduced by 75% in the third quintile (27-32 ng/ml) and by 80% in the fourth quintile (33-41 ng/ml) of serum 25-OHD.

Today

How does Vitamin D affect cancer? Regulate cell cycles Force cell death Resist signals from substances which cause cancer cells to grow Inhibit invasion into normal tissue Prevent metastasis Preventing the formation of excessive blood vessel growth around the tumor

Vitamin D toxicity Too much calcium in urine 0 reported deaths from vitamin D toxicity sGrBE_n5c&feature=related sGrBE_n5c&feature=related

Cultural “According to scientific studies, right now 70 percent of whites are deficient in vitamin D, and 97 percent of African Americans are deficient, resulting in outrageously higher rates of cancer among [African Americans]” -Adams, 2010

Governmental

The future is sunny…with a chance of vitamin D

Future A single study can’t decisively resolve the question "Among the questions to be addressed in future studies is the relationship between vitamin D levels and future cancer risk both for individual cancer sites and for total cancer risk.“ –Freedman

References Garland, C. F., Garland, F. C., Shaw, E. K., Comstock, G. W., Helsing, K. J., & Gorham, E. D. (1989). Serum 25-hydorxyvitamin d and colon cancer: eight-year prospective study. The Lancet vol. 334, McCullough ML, R. A. (2003). Calcium, vitamin D, dairy products, and risk of colorectal cancer in the Cancer Prevention Study II Nutrition Cohort (United States). Cancer Causes Control vol, 14.1, Owens, L. (2010, January 12). Vitamin D Stimulates Anti Breast Cancer Protein. Retrieved February 22, 2011, from suite101.com: breast-cancer-protein-a Rhodes, P. (2008, May 20). Vitamin D is hot! Here's how to get it. Retrieved February 28, 2011, from CNN Health: intake-international-units/3?_s=PM:HEALTH Vitamin D. (2010, November 24). Retrieved February 28, 2011, from MedlinePlus: Vitamin D and Cancer Prevention: Strengths and Limits of the Evidence. (2010, June 16). Retrieved February 28, 2011, from National Cancer Institute: