Here are nine factors that can influence a person's vitamin D level: 1. The latitude where you live. At higher latitudes, the amount of vitamin D–producing UVB light reaching the earth's surface goes down in the winter because of the low angle of the sun. In Boston, for example, little if any of the vitamin is produced in people's skin tissue
Vitamin D plays an important role in the calcium and phosphorus metabolism and helps ensure adequate levels of these minerals for metabolic functions and bone mineralization . 1,25(OH) 2 D increases the efficiency of intestinal calcium absorption from 10%–15% to 30%–40% by interacting with the VDR-RXR and thereby promoting the expression of
Vitafusion Calcium + D3 Vitamin Gummies (200 ct.) (780) $3.50 off. Member's Mark Vitamin C 1000 mg plus Citrus Bioflavonoids & Rose Hips Tablets (500 ct.) (144)
Long-term effect of calcium-vitamin D(3) fortified milk on blood pressure and serum lipid concentrations in healthy older men. Eur J Clin Nutr 2009;63(8):993–1000. CrossRef PubMed; Golzarand M, Shab-Bidar S, Koochakpoor G, Speakman JR, Djafarian K. Effect of vitamin D3 supplementation on blood pressure in adults: an updated meta-analysis. With chronic and/or severe vitamin D deficiency, a decline in calcium and phosphorus absorption by your intestines leads to hypocalcemia (low calcium levels in your blood). This leads to secondary hyperparathyroidism (overactive parathyroid glands attempting to keep blood calcium levels normal). While the actual amount and %DV of vitamin D, calcium, iron, and potassium must be listed, other vitamins and minerals may be listed voluntarily by the manufacturer.

Vitamin D is a fat-soluble vitamin that plays an important role in calcium homeostasis and bone metabolism. Vitamin D deficiency can lead to osteomalacia and rickets in children and osteomalacia in adults. The fortification of milk with vitamin D in the 1930s was effective in eradicating rickets in the world. However, subclinical vitamin D deficiency is still widely prevalent in both developed

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