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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

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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.

Rates of Childhood Overweight and Obesity Worldwide The highest rates occur in the most affluent re Rates of Childhood Overweight and Obesity Worldwide The highest rates occur in the most affluent re
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Video: Uterine (menstrual) cycle - phases

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