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Bushinsky DA, Parker WR, Alexander KM, Krieger NS. Metabolic, but not respiratory, acidosis increases bone PGE(2) levels and calcium release. Am J Physiol Renal Physiol. 2001 Dec;281(6):F1058-66. PMID: 11704556 [PubMed - indexed for MEDLINE]

Calcium, protein, and fruit and vegetables as dietary determinants of bone health. New SA, Millward DJ. Am J Clin Nutr. 2003 May;77(5):1340-1; author reply 1341. PMID: 12716695

Positive effects of vegetable and fruit consumption and calcium intake on bone mineral accrual in boys during growth from childhood to adolescence: the University of Saskatchewan Pediatric Bone Mineral Accrual Study. Vatanparast H, Baxter-Jones A, Faulkner RA, Bailey DA, Whiting SJ. Am J Clin Nutr. 2005 Sep;82(3):700-6. PMID: 16155286

Effects of calcium, dairy product, and vitamin D supplementation on bone mass accrual and body composition in 10-12-y-old girls: a 2-y randomized trial. Cheng S, Lyytikäinen A, Kröger H, Lamberg-Allardt C, Alén M, Koistinen A, Wang QJ, Suuriniemi M, Suominen H, Mahonen A, Nicholson PH, Ivaska KK, Korpela R, Ohlsson C, Väänänen KH, Tylavsky F. Am J Clin Nutr. 2005 Nov;82(5):1115-26; quiz 1147-8. PMID: 16280447

Reducing fracture risk with calcium and vitamin D. Lips P, Bouillon R, van Schoor NM, Vanderschueren D, Verschueren S, Kuchuk N, Milisen K, Boonen S. Clin Endocrinol (Oxf). 2009 Sep 10. [Epub ahead of print] PMID: 19744099 DOI: 10.1111/j.0300-0664.2009.03701.x

Linus Pauling Institute at Oregon State University

Vitamin D is very important for bone health because it plays a role in calcium absorption in the stomach and digestive tract.

Giving saturated fat another chance. Saturated fat has long held a bad rep and been noted for its potential to contribute to cardiovascular disease. So you might understand why I was a bit skeptical of all the hype surrounding the supposedly miracle-working power of coconut oil, which is composed of saturated fatty acids. However, if there's one thing I have learned as a nutrition student, it is that research has the potential to change our views as we continue to expand our knowledge and make new discoveries. Coconut oil may prevent and alleviate disease. Both research and clinical studies have shown that MCFA may be useful in treating and preventing diseases such as diabetes, osteoporosis, virus-related dieases (mononucleosis, hepatitis C, herpes, etc.), gallbladder disease, Crohn's disease, and cancer. The smaller size of MCFA (compared to LCFA) allows them to be digested more easily, making them ideal for those suffering from digestive diseases. Coconut oil may assist in the absorption and retaining of calcium, thereby benefiting bones. Coconut oil has antimicrobial, antiviral, and antifungal properties. Lipid-coated bacteria and viruses contain a lipid coat which encloses their DNA among other cellular materials. When consumed by humans, coconut oil disrupts the lipid membrane, killing the pathogens without damaging the host or harming health-promoting intestinal bacteria. The antimicrobial properties stem from the monoglycerides and free fatty acids (mainly lauric acid and capric acid) that compose coconut oil.

If you've been following the Track Your Plaque conversation, you know that, contrary to prevailing opinion among many cardiologists, there is an emerging notion that coronary calcification is an active process, a true part of the disease. Vitamin D3 is an important aspect of this question. So is vitamin K2. Not to be confused with K1 that plays a role in blood coagulation, K2 has an important role in calcium metabolism. Thus, vitmain K2 deficiency is related to osteoporosis and to coronary calcification.

Mix everything together and eat immediately. You can add extra crunch - and more minerals - by adding some sunflower or sesame seeds. Tip: Calcium is needed for healthy bones and teeth. Kids and teens need lots of calcium to grow string, healthy bones and adults need calcium to help prevent problems like osteoporosis.

Vitamin D is a fat-soluble vitamin that is essential for maintaining normal calcium metabolism (1). Vitamin D3 (cholecalciferol) can be synthesized by humans in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight, or it can be obtained from the diet. Plants synthesize ergosterol, which is converted to vitamin D2 (ergocalciferol) by ultraviolet light. Vitamin D2 is less active in birds than vitamin D3 and may also be less active in humans (2). When exposure to UVB radiation is insufficient for the synthesis of adequate amounts of vitamin D3 in the skin, adequate intake of vitamin D from the diet is essential for health.

Maternal vitamin D status during pregnancy and childhood bone mass at age 9 years: a longitudinal study. Javaid MK, Crozier SR, Harvey NC, Gale CR, Dennison EM, Boucher BJ, Arden NK, Godfrey KM, Cooper C; Princess Anne Hospital Study Group. Lancet. 2006 Jan 7;367(9504):36-43. Erratum in: Lancet. 2006 May 6;367(9521):1486. PMID: 16399151 doi:10.1016/S0140-6736(06)67922-1 Interpretation Maternal vitamin D insufficiency is common during pregnancy and is associated with reduced bone-mineral accrual in the offspring during childhood; this association is mediated partly through the concentration of umbilical venous calcium. Vitamin D supplementation of pregnant women, especially during winter months, could lead to longlasting reductions in the risk of osteoporotic fracture in their offspring.

Long-term effects of giving nursing home residents bread fortified with 125 {micro}g (5000 IU) vitamin D3 per daily serving. Mocanu V, Stitt PA, Costan AR, Voroniuc O, Zbranca E, Luca V, Vieth R. Am J Clin Nutr. 2009 Feb 25. [Epub ahead of print] PMID: 19244376

Krieger NS, Frick KK, Bushinsky DA. Cortisol inhibits acid-induced bone resorption in vitro. J Am Soc Nephrol. 2002 Oct;13(10):2534-9. PMID: 12239242 [PubMed - indexed for MEDLINE]

Bushinsky DA, Smith SB, Gavrilov KL, Gavrilov LF, Li J, Levi-Setti R. Chronic acidosis-induced alteration in bone bicarbonate and phosphate. Am J Physiol Renal Physiol. 2003 Sep;285(3):F532-9. Epub 2003 May 20. PMID: 12759230 [PubMed - indexed for MED

Krieger NS, Parker WR, Alexander KM, Bushinsky DA. Prostaglandins regulate acid-induced cell-mediated bone resorption. Am J Physiol Renal Physiol. 2000 Dec;279(6):F1077-82. Erratum in: Am J Physiol Renal Physiol 2001 Sep;281(3):section F following tabl

Heaney RP. Functional indices of vitamin D status and ramifications of vitamin D deficiency.Am J Clin Nutr. 2004 Dec;80(6 Suppl):1706S-9S. Review.PMID: 15585791 [PubMed - indexed for MEDLINE]

Dairy and bone health. Heaney RP. J Am Coll Nutr. 2009 Feb;28 Suppl 1:82S-90S. PMID: 19571166

Amount and type of protein influences bone health. Heaney RP, Layman DK. Am J Clin Nutr. 2008 May;87(5):1567S-1570S. Review. PMID: 18469289