48.2 MB (2.9 MB compressed)
5002 x 3371 pixels
42.4 x 28.4 cm ⏐ 16.7 x 11.2 in (300dpi)
MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Oranges. View of several oranges. Oranges (Citrus sinensis) are a rich source of vitamin C (ascorbic acid). This is needed to build and maintain healthy bones, teeth, gums and blood vessels, and helps some of the body's enzymes to work properly. Unused vitamin C is quickly excreted by the body in urine and regular dietary intakes are needed to prevent ill health. A person typically consumes about 45 milligrams of vitamin C a day. Lack of vitamin C causes the disease scurvy, where small blood vessels leak and teeth fall out.
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