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Higher blood levels of selenium may reduce the incidence of skin cancer by about 60 per cent, according to a new study from Dutch and Australian researchers. Writing in Cancer Epidemiology, Biomarkers & Prevention, the researchers report that the mineral was associated with reduced risks of both basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). On the other hand, blood levels of carotenoids and alpha-tocopherol (vitamin E) were not associated with any influence on skin cancer risks, report the researchers from Queensland Institute of Medical Research, the University of Queensland, and Maastricht University.

Increased intakes of folic acid by mandatory fortification of grain products to reduce neural tube defects may also reduce a baby's risk of severe congenital heart defects, says a new study. The incidence of the heart problems was reduced by 6 per cent following mandatory fortification of grain products, introduced in Canada in 1998, researchers from McGill University and the University of Alberta report in the British Medical Journal.

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What causes coronary heart disease or coronary atherosclerotic plaque, this thing that we track with heart scans? Well, here are a few little-publicized facts about heart disease that you are unlikely to hear from your When's-the-next-stent? cardiologist or the What is there besides statins? primary care doctor. (Since everybody knows that smoking is a modifiable risk for heart disease that can be readily identified, let's focus on the blood tests that reveal heart disease causes.)

Association Between Serum 25-Hydroxyvitamin D Level and Upper Respiratory Tract Infection. \nAdit A. Ginde, MD, MPH; Jonathan M. Mansbach, MD; Carlos A. Camargo Jr, MD, DrPH . \nArch Intern Med. 2009;169(4):384-390\n

The soybean, a seemingly unremarkable legume related to clover and alfalfa, is an fact an extraordinary food product. In aaddition to its use as a food source

A nested case control study of plasma 25-hydroxyvitamin D concentrations and risk of colorectal cancer. Wu K, Feskanich D, Fuchs CS, Willett WC, Hollis BW, Giovannucci EL. J Natl Cancer Inst. 2007 Jul 18;99(14):1120-9. Epub 2007 Jul 10. PMID: 17623801

Hypovitaminosis D among rheumatology outpatients in clinical practice.\nMouyis M, Ostor AJ, Crisp AJ, Ginawi A, Halsall DJ, Shenker N, Poole KE.\nRheumatology (Oxford). 2008 Sep;47(9):1348-51. Epub 2008 May 22.\nPMID: 18499714 \ndoi:10.1093/rheumatology/ken203

Calcium absorption varies within the reference range for serum 25-hydroxyvitamin D. Heaney RP, Dowell MS, Hale CA, Bendich A. J Am Coll Nutr. 2003 Apr;22(2):142-6. PMID: 12672710

Serum 25-hydroxyvitamin D levels and risk of multiple sclerosis. Munger KL, Levin LI, Hollis BW, Howard NS, Ascherio A. JAMA. 2006 Dec 20;296(23):2832-8. PMID: 17179460

Welcome to The Nutrition Source, a Web site maintained by the Department of Nutrition at the Harvard School of Public Health.

Nutrient intake and immune function of elderly subjects. Wardwell L, Chapman-Novakofski K, Herrel S, Woods J. J Am Diet Assoc. 2008 Dec;108(12):2005-12. PMID: 19027403 doi:10.1016/j.jada.2008.09.003