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There are 60,000 miles of blood vessels in every adult human.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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There are approximately 3 million unintended pregnancies in the United States each year.

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