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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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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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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.