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The average adult has about 21 square feet of skin.

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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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