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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.