Iron is found in a very important component of your blood called hemoglobin. Hemoglobin is the compound in red blood cells that carries oxygen from your lungs so that it can be utilized by your body. It's the iron in hemoglobin that gives blood its red appearance. A diet deficient in iron can result in fatigue, reduced resistance to diseases, and increased heart and respiratory rates. Food scientists say that a healthy adult requires about 18 mg of iron each day. If all of the iron from your body was extracted, you'd have enough iron to make only two small nails.
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How the national grid copes with 1,500,000 Britons simultaneously making a cup of tea.
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