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25-hydroxyvitamin D levels and the risk of mortality in the general population. Melamed ML, Michos ED, Post W, Astor B. Arch Intern Med. 2008 Aug 11;168(15):1629-37. PMID: 18695076

Plasma 25-hydroxyvitamin D levels in young children undergoing placement of tympanostomy tubes.\nLinday LA, Shindledecker RD, Dolitsky JN, Chen TC, Holick MF.\nAnn Otol Rhinol Laryngol. 2008 Oct;117(10):740-4.\nPMID: 18998501

ScienceDaily (Feb. 25, 2009) - Researchers at Purdue University have precisely measured the impact of a high-fat diet on the spread of cancer, finding that excessive dietary fat caused a 300 percent increase in metastasizing tumor cells in laboratory animals.

Eating healthy sounds like a good idea in theory, but when sticking to your budget is as important as it is during this economic crisis, it's often easier to pick up the cheapest foods at the store. These 50 foods, however, prove that nutrition doesn't have to be as expensive as you think.

Scientists in Canada reviewing the research so far on links between different diets and heart disease found strong evidence that diets high in vegetables and nuts, and those that follow a Mediterranean pattern rich in fruit, vegetables and fish were strongly associated with lower heart disease risk than those that rely on food with a high glycemic index or high in trans-fatty acids. High glycemic index food includes rice, pasta and refined carbohydrates like white bread, and foods high in trans-fatty acids include fried foods, baked goods and snacks.

A Systemic Review of the Roles of n-3 Fatty Acids in Health and Disease. Riediger ND, Othman RA, Suh M, Moghadasian MH. J Am Diet Assoc. 2009 Apr;109(4):668-79. PMID: 19328262 doi:10.1016/j.jada.2008.12.022

Omega-3 fatty acids: a comprehensive review of their role in health and disease. Yashodhara BM, Umakanth S, Pappachan JM, Bhat SK, Kamath R, Choo BH. Postgrad Med J. 2009 Feb;85(1000):84-90. PMID: 19329703 doi:10.1136/pgmj.2008.073338