Scientists are suggesting that a new vitamin D-fortified food - bread made with high-vitamin D yeast - could help those who couldn't get enough vitamin-D from sunlight or foods. The work is published in the Journal of Agricultural and Food Chemistry. Vitamin D insufficiency has been linked to an increased risk of heart disease, cancer, allergy in children, and other conditions. Connie Weaver and colleagues did experiments with laboratory rats, a stand-in for humans in such research, that ease doubts over whether bread baked with high vitamin D yeast could be a solution. Yeast produces one form of the vitamin, termed vitamin D2, which has been thought to be not as biologically active as the form produced by sun, vitamin D3. They showed bread made with vitamin D2-rich yeast, fed to the laboratory rats, had effects that seemed just as beneficial as vitamin D3. "Our results suggest that bread made with high vitamin D yeast could be a valuable new source of vitamin D in the diet," they concluded.
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